Question

1. ____ act as the base of a word. infixes prefixes roots suffixes

Explanation:

In linguistics (a subfield of Arts, specifically in the study of word structure), roots are the base part of a word that carries the core meaning. Infixes are inserted within a word, prefixes are added before a root, and suffixes are added after a root—none of these act as the base. So the correct option is "Roots".

Answer:

C. Roots (assuming the options are labeled A, B, C, D with A: Infixes, B: Prefixes, C: Roots, D: Suffixes; here the third option is Roots)