pradeepkaushal9518 wrote:A recent study found that if children socialize and were reading challenging material, they will be more likely to read on their own and gain proficiency quicker than will children who read material that is overly simplistic.

A were reading challenging material, they will be more likely to read on their own and gain proficiency quicker than will

B read challenging material, they are more likely to read on their own and gain proficiency quicker than will

C read challenging material, they are more likely to read on their own and gain proficiency more quickly than

D were reading challenging material, they have been more likely to read on their own and gain proficiency quicker than will

E were reading challenging material, they are more likely to read on their own and gain proficiency more quickly than

debmalya_dutta wrote: Two things here -
1.make the sentence parallel - socialize and read
2. more quickly is the right form and not quicker (I think)

Hence C

Assertion 2, in a general case, is incorrect. Both more quickly and quicker are valid comparatives.

The difference is that quicker is an adjective while quickly is an adverb. The use of one or the other depends on what it is modifying. Here, the adverb more quickly is right because it is modifying the verb to read.