Sentence Correction

The mechanisms underlying this phenom­enons are not clear, but lead author David Carmel, who is now a postdoctoral researcher at New York University, speculates that the brain might process negative stimuli faster than positive ones.


A. phenom­enons are not clear, but lead author David Carmel, who is now a postdoctoral researcher at New York University, speculates

B. phenom­enon is not clear, but lead author David Carmel, who is now a postdoctoral researcher at New York University, has speculated

C. phenom­enon are not clear, but lead author David Carmel, who is now a postdoctoral researcher at New York University, speculates

D. phenom­enon is not clear, but lead author David Carmel, who is now a postdoctoral researcher at New York University, speculated

E. phenom­enon is not clear, but lead author David Carmel, who is now a postdoctoral researcher at New York University, speculates

OA: will let u know soon.

IMO E

"this" should refer singular noun phenomenon and author.........speculates is correct.

It can't be E. Mechanisms is plural so you need 'are' not 'is'. I choose C

okigbo wrote:It can't be E. Mechanisms is plural so you need 'are' not 'is'. I choose C

Yes correct. I overlooked the plural subject.

"Underlying this phenomenon" is just a phrase and we need plural verb

The mechanisms subject underlying this phenom­enons are not clear, but lead author David Carmel, who is now a postdoctoral researcher at New York University, speculates that the brain might process negative stimuli faster than positive ones.

sub: the mechanisms(plural)
verb: are(plural)
so eliminate: B,D and E

phenomenon ....is singular form
and phenomena is plural form

phenonmenons is not a word
so eliminate A

hence C is the ans

Thanks thephoenix and all!

Here Subject 'The mechanisms' and word 'phenonmenons' lead to correct answer.

OA: C