3. Sentence 5: The studies are designed to be making students think.
What correction should be made to this
sentence?
(1) change the spelling of studies to
studys
(2) change are to is
(3) change designed to designing
(4) replace to be making with to make
(5) no correction is necessary

(4)  replace 'to be making' with 'to make'

Explanation:

The studies are designed to  make students think.

ccd puts the honeybee populations and crop health at risk.

the above detail from paragraph 2 supports the inference about honeybee.

i don't know sorry i cannot read a novel in 30 min.

explanation:

but just in case i think the answer is b.