Direct election of senators to congress occurred because of:
a. the original wording in article one
c. the bill of rights
b. the original wording in article two
d. a constitutional amendment

The correct answer is letter D. a constitutional amendment.

Direct election of senators to Congress occurred because of a constitutional amendment. Direct election is a term referred to a system of choosing political officeholders. Voters cast their ballots directly for the person, or political party.