Correct option is A
The incorrect part is
"It has becoming clear."
Detailed Grammar Explanation:
· The verb
"becoming" is incorrect in this structure.
· The
present perfect tense (has/have + past participle) should be used.
·
"Becoming" (present participle) is incorrect; instead, we use
"become" (past participle).
Correction:
· "It has
become clear that attempts to impress the people have failed."
Example
· "It has
become necessary to take immediate action."