Nonrandom mating :
a. affects genotypic frequencies but not allelic frequencies.
b. only occurs when relatives mate.
c. is always harmful when it occurs in populations.
d. can be measured as the probability that two alleles in an individual are identical by state.
e. affects allelic frequencies but not genotypic frequencies.

Answer is A. Affects genotypic frequencies and not allelic frequencies.

Explanation:

Non random mating is when an individual organism prefer to mate with another organism of the same genotype or different genotype.

There are some things that make this to happen. It may be based on physical accessibility or characteristics among others.

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds