Which statement is not true about suffixes

Are these your options?
- a suffix is a group of letters
- a suffix can have more than one meaning
- a suffix can appear anywhere in the term
- an occasional medical term can have two suffixes
- if a suffix starts with a vowel, no combining vowel is needed

If so, the correct answer is that a suffix can appear anywhere in the term. This option is not correct because there is a specific place in a word where the suffix is added, and it is always at the end of a word, right after the root of a word. For example, if you want to create an adverb out of an adjective quick, you'd add the suffix -ly at the end and get the adverb quickly.

What's the question again?

Stimulants speed up the central nervous system.