What effect does inbreeding have on a population?

inbreeding tends to decrease the effects of sampling error in a population.
inbreeding tends to increase the census population size.
inbreeding tends to increase the proportion of homozygous individuals in a population.
inbreeding tends to decrease a population's susceptibility to disease.

I’d like to believe the answer is C. Inbreeding tends to increase the proportion of homozygous individuals in a population.

I’d like to believe the answer is C. Inbreeding tends to increase the proportion of homozygous individuals in a population.

genetic variation will increase because of a new habitat and food source.

explanation:

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.