Ashish did not admit his mistake in the beginning.

The correct answer is C. accept.

Ashish did not admit his mistake in the beginning. This means that he did not accept that he had made a mistake. He may have been trying to cover up his mistake, or he may have been trying to avoid responsibility. Whatever the reason, he did not want to admit that he had done something wrong.

The other options are not correct because they do not describe what Ashish did.

• Option A, commit, means to do something wrong. Ashish did not commit a mistake; he made a mistake.
• Option B, apologize, means to say that you are sorry for something you have done wrong. Ashish did not apologize for his mistake; he tried to cover it up.
• Option D, realize, means to understand something. Ashish did realize that he had made a mistake; he just did not want to admit it.