The correct answer is A. visit.
The verb “visit” is used to describe the act of going to see someone or something, typically for a short period of time. In the sentence “Did you ever visit her?”, the speaker is asking whether the listener has ever gone to see the person being referred to.
The verb “visited” is the past tense form of “visit”. It is used to describe an action that happened in the past. In the sentence “I visited her last week”, the speaker is saying that they went to see the person being referred to last week.
The verb “had visiting” is the past participle form of “visit”. It is used to form the perfect tenses. In the sentence “I have visited her twice”, the speaker is saying that they have gone to see the person being referred to twice.
The verb “visiting” is the present participle form of “visit”. It is used to form the progressive tenses. In the sentence “I am visiting her now”, the speaker is saying that they are going to see the person being referred to now.
In the sentence “Did you ever visit her?”, the speaker is asking about a past event, so the past tense form “visited” is the most appropriate answer.