Where is a prefix located in a word?

Find the prefix in the word below:

Antisocial

Which is true about the word below:

Disqualified

Which one correctly defines the word below:

Aqua

There are multiple students in my class.

What prefix does the underlined word have?

What word is being defined?

-To become involved in the activities and concerns of other people when your involvement is not wanted; to stop or slow something or to make something more difficult