Explanation

The original sentence, "He does not often visit my house," indicates that the subject (he) does not make frequent visits. To rephrase this in affirmative form, we need to choose a term that accurately reflects the level of frequency implied in the negative statement.

Option B, "He rarely visits my house," aligns perfectly with the original sentence. "Rarely" indicates infrequency but suggests that visits do occur occasionally, which is consistent with the idea of not visiting often.

On the other hand, Option C, "He never visits my house," suggests that visits do not happen at all. This changes the meaning significantly and does not accurately convey the sense of infrequent visits that the original sentence implies. Therefore, while both B and C pertain to frequency, only B maintains the nuance of occasional visits, making it the correct affirmative equivalent.

Thus, the affirmative version of the original negative statement is best captured by option B, affirming that he visits, but not often.