Sentence Correction

On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.

A. On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow
B. On Earth, among the surest indications of sunspot cycles are, it is believed, the rate of tree growth
C. On Earth, the rate at which trees grow is believed to be among the surest indications of sunspot cycles
D. Among the surest indications on Earth of sunspot cycles, believed to be the tree growth rate
E. Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow

IMO C..

I'm going with B. Thank you.

I am going with option: C. Thank you!

IMO C

what is the actual answer?!!
I feel it is C

the answer is E.

in C, "sunspot cycles" is too close to "as seen in the rings visible..."

Also, "On Earth" in C motifies the entire phrase that follows. It should only modify "indications"

IMO: C
correct subject

IMO: C

IMO C

IMO C

C too

IMO E
Missionmba, can we have OA

IMO the correct answer should be E.

In the non-underlined portion of the sentence, the pronoun "their" (.. .their trunks) should have trees as its antecedent. "their trunks" cannot refer to "sunspot cycles". The pronouns should be as close to the antecedents as possible. Hence it makes more sense to place - trees - as close to the pronoun "their" .. their trunks..

The only two options that do so are A and E. However in A the construct, "rate that trees grow" is little awkward.

Option E clearly conveys the intended meaning clearly.

Can we have the OA please. Thanks

imo E