Correct Answer: Acrophobia

Solution : The correct choice is the second option .

The fear of heights is commonly known as acrophobia. This term comes from the Greek words "akron", meaning peak or summit, and "phobos", meaning fear. People experiencing acrophobia often feel intense anxiety, panic, or fear when they are in high places.

The meanings of the other options are as follows:

• Hydrophobia : This term refers to fear of water caused by rabies.
• Bathophobia : This is the fear of depths or deep places, such as deep water, deep underground, or even vast expanses of open space.
• Vaccinophobia : This term refers to the fear of vaccines or vaccinations. It involves anxiety or phobia related to receiving vaccinations.