Question

why do scientists carry out experiments?
a. because scientists like to work in labs
b. because scientific knowledge is full of untested theories
c. because scientific knowledge is based on observations
d. because scientists like to control variables

Explanation:

Scientific knowledge is built on observations. Experiments are carried - out to test hypotheses, make new observations, and validate or refute existing knowledge. They are a key part of the scientific method which relies on empirical evidence from observations made during experiments. Option A is too simplistic, option B is not the main reason as experiments are not just about untested theories, and option D is a means to an end in an experiment rather than the overall reason for doing experiments.

Answer:

C. Because scientific knowledge is based on observations