Question

multiple choice question 3 listen which scientific method involves testing a hypothesis by systematically manipulating variables? a an observation b an analysis c an experiment d a model

Explanation:

• Option A: Observation is about gathering data by watching, not manipulating variables.
• Option B: Analysis involves examining data, not variable manipulation.
• Option C: An experiment is designed to test a hypothesis by systematically manipulating independent variables to observe changes in dependent variables.
• Option D: A model is a representation, not a method for testing via variable manipulation.

Answer:

C. an experiment