Question

the root chron means time. what does the word chronic mean?
happening in a vexing or disturbing way
happening frequently or for a long duration
happening in an official or formal way

Explanation:

The root "chron" means time. The word "chronic" relates to time - specifically, it refers to something that occurs over a long period or frequently. The first option is about being vexing/disturbing, and the third is about official/formal, neither of which relate to time. So the correct meaning is related to frequency or long duration.

Answer:

B. happening frequently or for a long duration (assuming the options are labeled A, B, C with A being "happening in a vexing or disturbing way", B being "happening frequently or for a long duration", C being "happening in an official or formal way")