He failed to perceive that his bad habit was having an adverse effect on his son too.

The correct answer is A. ignore.

To perceive means to become aware of something through the senses. To ignore means to refuse to take notice of something. In this case, the man is failing to become aware of the

The other options are not correct because they do not mean to become aware of something. To apprehend means to arrest or capture someone. To conceive means to become pregnant. To create means to make something new.

Here is a more detailed explanation of each option:

• A. ignore: To ignore something means to refuse to take notice of it. In this case, the man is failing to become aware of the negative effects that his bad habit is having on his son.
• B. apprehend: To apprehend someone means to arrest or capture them. In this case, the man is not arresting or capturing his bad habit.
• C. conceive: To conceive means to become pregnant. In this case, the man is not becoming pregnant with his bad habit.
• D. create: To create something means to make it new. In this case, the man is not making his bad habit new.