In a scientific study, a conclusion can
a. state a theory.
b. ask a question.
c. prove a hypothesis.
d. support a hypothesis.

D support a hypothesis

A conclusion in scientific research summarizes the results obtained from the data of the experiments conducted which can be in support of the hypothesis or can be contradictory to the hypothesis. A conclusion could be defined as summing up of the arguments to draw inferences from the research conducted however pointing null hypothesis is also very important because both accept, and rejection of null hypothesis provides very useful information

no the answer is c only objects touching the earth's surface can be acted upon by an outside force

answer; 11th circuit or federal circuit;