Question

in what part of the scientific investigation do we state the c.e.r.?

Explanation:

C.E.R. stands for Claim - Evidence - Reasoning. In a scientific investigation, it is typically stated in the conclusion part. The claim is the answer to the research question, evidence is the data and observations, and reasoning explains how the evidence supports the claim. This is usually summarized at the end of an investigation.

Answer:

Conclusion