anksgmat

Hi the OA is D. effective_factor , sandy22 thanks for your reply please suggest how parallel construction is maintained in D (I am unable to understand the explanation provided by sandy22. Please help ! ) I also picked E like mitzi "originating from diverse ethnic and cultural heritages and perpetuating"

The increased popularity and availability of televisions has led to the decline of regional dialects, language variations which originate from diverse ethnic and cultural heritages and perpetuated by geographic isolation. which originate from diverse ethnic and cultural heritages and perpetuated that originated from diverse ethnic and cultural heritages and perpetuated originated from diverse ethnic and cultural heritages and perpetuated originating from diverse ethnic and cultural heritages and perpetuated Dear Experts Please suggest why A is incorrect. Thanks in Advance originating from diverse ethnic and cultural heritages and perpetuating

Carbon monoxide levels in the atmosphere grew by enough of an increased percentage during the twentieth century that it began to trap heat radiating from the Earth, and it caused the average surface temperature to rise. · Carbon monoxide levels in the atmosphere grew by enough of an increased percentage during the twentieth century that it began to trap heat radiating from the Earth, and it caused the average surface temperature to rise. · Carbon monoxide levels in the atmosphere increased by enough of a percentage during the twentieth century that they began to trap heat radiating from the Earth, causing the average surface temperature to rise. · Levels of atmospheric carbon monoxide increased sufficiently during the twentieth century to begin trapping heat radiating from the Earth, causing the average surface temperature to rise. · Atmospheric carbon monoxide levels increased by a sufficient percentage during the twentieth century to begin trapping heat radiating from the Earth, which caused the average surface temperature to rise. · Levels of carbon monoxide in the atmosphere during the twentieth century increased enough to begin trapping heat radiating from the Earth, causing the average surface temperature to rise. OA - C. Which i found to be the correct option too. But i have a doubt [Levels of atmospheric carbon monoxide] increased sufficiently [during the twentieth century] to begin trapping heat radiating from the Earth, causing the average surface Does this not cause a change of tense. I have such doubts in other SC too. Shouldn't the tense remain same. How do i identify in such cases , please suggest :hmm: