Scientists from the Cytolab team are conducting experiments to see whether proteins will prematurely turn into solids in silk-producing animals under laboratory conditions.
A. to see whether proteins will prematurely turn into solids
B. to see whether proteins should prematurely turn into solids
C. to see if proteins will prematurely turn into solids
D.that see if proteins would prematurely turn into solids
E. that see whether proteins would prematurely turn into solids
Authors bio is coming up shortly. 
A
A
A
A, but item is not well constructed–the phrase “prematurely turn into solids” should not be underlined (actually, there is no underline) and should not be repeated in the distractors as it is the same in all 5 options.
The answer to this question is definitely A