3. a student wants to copy an experiment that he read about.
what is the student doing?
a. repetition
b. replication
c. oscillation
d. both a & b

provide an

The student is actually doing replication

Option B

Explanation:

A student reads about a particular experiment, gets inquisitive to learn more and hence tries to copy that particular experiment. This is called as replication   as the student tries the same methodology and process adapted to perform the experiment. He tries to obtain the same result.

This result fascinates him giving assurance of the experiment. It also helps motivate trying different experiments.  It also inspires him to make further researches.