The correct answer is: B. He said he was glad to be here this evening.
The sentence “He said, ‘I am glad to be here this evening'” is in the past tense. This means that the speaker is talking about something that happened in the past. In this case, the speaker is saying that the person they are talking about said that they were glad to be there that evening.
The other options are incorrect because they do not accurately reflect the tense of the original sentence. Option A, “He said that he was glad to be there that evening,” is correct in terms of meaning, but it is not in the same tense as the original sentence. Option C, “He says he was glad to be here this evening,” is in the present tense, but the original sentence is in the past tense. Option D, “He asked he is glad to be here this evening,” is incorrect because it does not make sense. The word “asked” is used to ask questions, but the original sentence is not a question.