The presidential candidates in the election of 1800 were John Adams and A:A. Aaron Burr.B:B. Thomas Jefferson.C:C. Alexander Hamilton.D:D. Charles Pinckney.

In the election of 1800, the main presidential candidates were John Adams and Thomas Jefferson. Here’s a brief overview of the election:

1. Candidates:

   • John Adams: The incumbent president and member of the Federalist Party.
   • Thomas Jefferson: The candidate from the Democratic-Republican Party.

2. Context: This election is significant as it marked a contentious political rivalry and highlighted the growing divisions in American political life.

3. Outcome: The election resulted in a tie between Thomas Jefferson and Aaron Burr in the Electoral College, leading to a decision being made in the House of Representatives, where Jefferson was ultimately elected president.

Given the options provided, the correct answer is: B: Thomas Jefferson.