Question

The best way to locate a suffix is to look for a word part that

includes “pre”, “a”, or “en” for example.
shows the word’s central meaning.
is added to the end of the word root.
is added to the beginning of a word root

Answer 1

"is added to the end of the word root."

A suffix is a word part attached to the end of a root or base word (e.g., -ful, -ing, -ness).