1. Enoch and Elijah
2. Isaiah and Malachi
3. Samuel and John the Baptist
4. Moses and Paul
Number 3 is the correct answer.
Samuel may be considered the first prophet in this sense because Peter says in Acts 3:24:
And likewise, all the prophets who have spoken, from Samuel and his successors onward, also announced these days. Peter presents Samuel as the starting point of the prophetic line (or school) that continued through the Hebrew Scriptures. 1 Samuel 19:20 describes a “company of prophets” and shows Samuel standing over them as their head. This line of training continued through Elijah and Elisha. In 2 Kings 2, they visit various schools or communities of prophets, including those at Jericho, Gilgal, and the Jordan River.
John the Baptist may be considered the last prophet connected with the Hebrew Scriptures because he stands at the close of that prophetic era. He was the one predicted in Malachi 3:1: Behold, I am going to send My messenger, and he will clear the way before Me. John was not part of the Bride of the Messiah in the same way as believers after Pentecost. Rather, he called himself “the friend of the bridegroom”. His ministry was to prepare the way for the Messiah and to bear witness to Him.
Both Samuel and John had unique and blessed roles in God’s plan. Samuel anointed David as king, and John identified and confirmed Yeshua, the Son of David, at His baptism.
So, we can say that Samuel points us to David, and John points us to Yeshua, from the anointed king to the revealed Messiah.