Answer:
C. 76%
Step-by-step explanation:
In the study, Asch include several actors among the test subjects to give a wrong answer on purpose and let the subjects hear about it.
As it turn out, this create pressure among the non-actors test subjects and make them doubt their initial answer. In the end, 76% of them gave the wrong answer and the vast majority of it caused by the social pressure to conform to other's people opinion rather than sticking to their own personal belief.