Question

chron = \time\ chrom = \color\ meta = \change, beyond\ meter = \measure\ mono = \one\ based on the list of word roots, what is the meaning of the word chronometer? a device for measuring time something that changes color a tool for measuring color a single time period

Explanation:

The word root "chron" means "time" and "meter" means "measure". Combining them, a chronometer is a device for measuring time.

Answer:

A. a device for measuring time