(A) Donald Trump
(B) Barrack Obama
(C) ** Kamala Harris
(D) Erika Wallace-Thurman
EXPLANATIONS BELOW
Concept note-1: -Biden and his running mate, Kamala Harris, defeated incumbents Donald Trump and Mike Pence in the 2020 presidential election. On January 20, 2021, he became the oldest president in U.S. history, the first to have a female vice president and the first president from Delaware.
Concept note-2: -Harris formally won the vice presidential nomination on August 19, 2020, at the 2020 Democratic National Convention. The Biden–Harris ticket would go on to win the 2020 election, defeating the incumbent Republican ticket of Trump–Pence.
Concept note-3: -After the primaries and caucuses, each major party, Democrat and Republican, holds a national convention to select a Presidential nominee. The party’s Presidential nominee announces his or her choice for Vice President.