Usted. Would be the answer. The question asks how are you? Usted is a formal way of addressing someone.
Igualmente means the same.
Encantado means it was a pleasure to meet you,
1) son
2) es
3) soy
4) es
5) tienen
6) tiene
7) tienen
8) tengo
Hope it helps :)
The correct answer should be Ofrezca
