Question

a prefix is the multiple choice beginning of some words. foundation of the word that provides its meaning. vowel that joins a root to another root or to a suffix. combination of a root and a combining vowel. ending of some words.

Explanation:

A prefix is an affix that comes before a root - word. It is added to the beginning of a word to change its meaning. For example, "un -" in "unhappy" is a prefix. The foundation of a word is the root. The vowel joining roots or a root and a suffix is a combining vowel. The ending of a word is a suffix.

Answer:

beginning of some words.