When a researcher wishes to know how a set of participants changed over time or across repeated measures of a construct, the method that is conducted is:

Repeated method design or Within Groups or Within the Subject design

Explanation:

Given that Repeated Measures design is a form of research technique where the same subjects conducted in the same experimental study under various conditions of the independent variable. This is to let the researcher know how this group of participants changed over time.

Hence, in this case, the correct answer is known as the Repeated Measures design. It is sometimes called Within Groups or Within the Subject design

are their options?

otherwise i can't