Question

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

Explanation:

In medical - terminology and linguistics, a combining form like "my/o" is a combination of a root (here "my" related to muscle) and a combining vowel ("o"). It is used to link roots to other roots or suffixes in word - building.

Answer:

the combination of a root and a combining vowel.