Question

what action did thomas jefferson take despite questions about constitutional provisions allowing it? he sent lewis and clark on an expedition. he built a home at monticello. he authorized the louisiana purchase. he appointed a speaker of the house.

Explanation:

The Louisiana Purchase was a significant land deal. Critics questioned if the Constitution gave the president the power to acquire new territory. Despite these concerns, Jefferson went ahead with it. The Lewis and Clark expedition was a result of the Louisiana Purchase, not the action in question. Building Monticello was a personal project. Appointing the speaker of the House was a normal part of the government - legislative process and not controversial in the same constitutional - power - questioning way as the Louisiana Purchase.

Answer:

He authorized the Louisiana Purchase.