Question

does the sentence state a fact or an opinion? up to sixty percent of an adult humans body is made up of water. fact opinion

Explanation:

A fact is a statement that can be proven true through evidence or scientific research. The statement "Up to sixty percent of an adult human’s body is made up of water" is a scientifically verifiable statement (supported by biological and medical research), so it is a fact. An opinion is a personal belief or judgment, which this statement is not.

Answer:

fact