Will mark brainlist Determine whether the sentence is properly capitalized

We heard that dr. Palmer was the only physician to receive the Nobel prize.

Incorrect
Ocorrect

If both the president and the vice president can no longer serve, who will become the next head of state?

Values, conventions, clothing, and behaviors are part of a group's:

How did the percentage of americans living on farms change between 1820 and 1850 a. it lowered as many americans were sold into slavery b. it rated the same as people stopped coming to america c. it grew as more people came to america d. it lowered as many americans went to work in factories