skale

A states: A) If D, then A. This does imply that if not A then not D, however we are looking for if not D then not A. Its possible to have an E such that if E then D There can be no relation between E and A.

OA please

OA please

OA please

OA please

OA please

The argument states that bats use the blood vessels as a mechanism for heat dispersion which is caused by flapping wings. What if Sandactylus has other mechanism for heat dispersion? (E) Heat generated by Sandactylus in flapping its wings in flight could not have been dispersed by anything other than the blood vessels in its wings.

B fits well based on the conclusion.. C might look tempting, but try arbit numbers: assume 20K cars total, 600 are with radar, assume 100 got ticketed, then 33 with radar got ticketed.. so 100

If Bank failure causes low confidence and low confidence causes recession then bank failure would cause recession would be a strengthener. However I get a feeling am using external knowledge and might be wrong! Effective_factor: OA please!

Loggerhead turtles live and breed in distinct groups, of which some are in the Pacific Ocean and some are in the Atlantic. New evidence suggests that juvenile Pacific loggerheads that feed near the Baja peninsula hatch in Japanese waters 10,000 kilometers away. Ninety-five percent of the DNA samples taken from the Baja turtles match those taken from turtles at the Japanese nesting sites. Which one of the following, if true, most seriously weakens the reasoning above? The conclusion above is Pacific loggerheads feed in Baja but hatch in Japanese waters.. this is based on the evidence that 95% of DNA samples from loggerheads Baja match those in Japan. However, is this evidence sufficient for the conclusion.. D states that 95% of DNA samples from Baja match those in Atlantic... so the conclusion is weakened. Maybe its just the property of loggerheads to have high DNA correlation.. "hatching" conclusion is thus not correct!

I would go with E, however its easy to fall for C by ASSUMING the disease is genetically passed.. Can you tell the source of this question please.. thanks!

(D) Ninety-five percent of the DNA samples taken from the Baja turtles match those taken from Atlantic loggerhead turtles. If this were true then it would raise a doubt over the conclusion over presented evidence. Maybe its just a property of loggerheads to differentiate based on 5% of the DNA..

I like these deductive rules, there is no language play.. if only all questions were deductive :D The correct answer is C. B'cos if not D then not C, If not C then not B, and if not B then not A. Someone had nicely put it on the board sometime back.. If I live in New York then I live in USA. i.e. If I do not live in USA then I do not live in New York..

Thanks tpcool, On 2nd read, I agree that this simply means that recession will cause slowed economy growth plus few other things.. so in a way its not a strengthener! Looking at other options this one comes close, as its a cause (closure of bank) of the cause (confidence levels) which causes the result (recession): A recession can be brought on by the failure of a major bank that had been loaning money.

Ouch, this is a tough one.. the question asks to identify MOST SERIOUS problem for the success of COMPANY's PLAN.. The plan is to CREATE NEW SOURCE OF PROFIT.. Man-made emeralds will not be considered as valuable as naturally produced emeralds. Yes, profits will be less then.. possible candidate. Natural emeralds are produced by heat and pressure much more frequently than by chemical action. Ruled out, frequency is not in question. The types of material from which emeralds are formed are not found on the Earth’s surface. Chosen ROCKS, maybe they are found underwater, on mountains.. so that doesnt require mining.. ruled out! Laboratory conditions are difficult to replicate in a large-scale factory. No mention of lab conditions.. The gases that will mix with superheated water are so toxic that workers could suffer from a number of serious medical conditions if the handling of such gases is not strictly controlled. Close one, however they might have an automated process.. and its not discussed in the argument! I will go with A.