In what way can you determine whether to use who or whom in a relative clause? select all that apply.

a. whom is used as a subject.
b. who is used as a subject.
c. whom is used as an object.
d. who is used as an object

Option B and C

Explanation:

In case of relative clause , the object and subject of the sentence is determined by looking at the state of the verb.

The best and easiest way to do so is by asking questions with respect to the verb

a) The answer obtained in lieu to the question asked as "who" is doing the action defined by the verb in any sentence is the subject of the sentence

b)The answer obtained in lieu to the question asked as upon "whom" is this action being done as defined by the verb in any sentence is the object of the sentence

 Hence, option B and C are correct

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

check for the pregnancy rating of drug. if its class c or d see if other alternatives