B is wrong because the use of the gerund "releasing" makes it seem that the noun directly following the modifier is the subject - the "doer" of the action of releasing. In other words, B makes it seem that the descendants released the bees, (much like we can infer that John ran the 10 miles in "after running for 10 miles, John was hungry"), which is illogical.

Geva@MasterGMAT wrote:B is wrong because the use of the gerund "releasing" makes it seem that the noun directly following the modifier is the subject - the "doer" of the action of releasing. In other words, B makes it seem that the descendants released the bees, (much like we can infer that John ran the 10 miles in "after running for 10 miles, John was hungry"), which is illogical.

but don't u think that there should be word 'IN' before word 'LESS' in A option... ?

btgyes wrote: but don't u think that there should be word 'IN' before word 'LESS' in A option... ?

Not necessarily, though I understand why you would think so. "placing the word "in" focuses on the interval of time - 35 years - that it had taken the bees to migrate. A takes a different approach to say approximately the same thing: If the time of the original release is T, A is trying to mark a point in time "T+35" (slightly less than that), and say that BEFORE this point in time, the descendants had already migrated to southern texas.

Geva@MasterGMAT wrote:B is wrong because the use of the gerund "releasing" makes it seem that the noun directly following the modifier is the subject - the "doer" of the action of releasing. In other words, B makes it seem that the descendants released the bees, (much like we can infer that John ran the 10 miles in "after running for 10 miles, John was hungry"), which is illogical.

First honeybees got released then they got migrated, THEN

why sentence using HAD MIGRATED in non-underlined portion....

Ideally HAD should come come for that event which happened FIRST not SECOND...!

but in this sentence , HAD is coming for 2nd event i.e. MIGRATED..

Plz comment on this issue too....

Thanks...!

Assuming that honeybees were released in 1950. So, we are talking of a timeframe between 1950 to 1985. So, killer bees had migrated before 1985 and hence, migrated is in Past perfect. You need to interpret it that way.

RELEASE is first event

AND

MIGRATION is second event.

How we can use HAD for second event.... ???????????

Can anyone explain whats wrong with D