What three questions can we ask to analyze an arguments credibility?

the three things a writer must use to develop a successful argument are " Logical reasoning, relevant evidence, and persuasive diction

the answer is c? i just got it write

answer: ok heres what i got on google

explanation: to recognize illness in frogs, toads, newts, or salamanders, look for the following signs:

inactivity or unusual behaviors. the first thing you might notice in your amphibian is abnormal behavior or appearance.

gradual or sudden weight loss.

body/abdominal bloat.

skin blotches.

eye cloudiness.

edema.