bragss2

A is passive and it lacks clarity. The sentence makes the processes confusing. Comma before and in C adds on to the first part - "Warmed by the Sun, ocean water evaporates, rises high into the atmosphere" clarity of thought is maintained.

clearly not a gmat type question

oa pls??

none of the choices look good to me. shouldn't "had migrated" indicated earlier time frame?? tublai, forti+ ...any comments??

great explanation 40+

Agree with Anilmanu. Also the use of "since..." is redundant. C would have been correct if it began with "that" Doesn't look like a gmat type though

I think 1000Scs or for that matter 1000crs or rcs are compiled by some good soul for the benfit of the gmat test taker community at large. I don't think that any intellectual property or copyright issue is involved in it. People have been posting difficulties from 1000scs in the past too. However I suggest that before you post any difficulty Sc, try to search for it in this forum. I guess most of the difficult ones are already discussed here.

Look at this link too - http://www.www.urch.com/forums/gmat-sentence-correction/47998-cricket-temperatures.html

What does it refer to in D? Which in B refers to temp. Although to attract is better than for attracting but it is not wrong. Imo - B is correct. what is the oa?

simple - C

Agree that A has correct construction but whats wrong with B?

thanks guys...stupid of me to miss something that simple....guess i was too tired.

No clear choice. However A is the best.

C & E - to help surgeons to plan - redundant B & D - develop programs to work - that will work is better I will go with A

pls repost oultayo.