Correct option is C
The correct answer is
(c) These structures have come to play an important role.
Explanation:
Option (c) is the correct sentence with no spelling errors. The other sentences contain spelling errors:
· In (a) "importent" should be "important."
· In (b) "structres" should be "structures."
· In (d) "strucures" should be "structures."
Correct sentence:
These structures have come to play an important role.