Answer:
<u><em>Past Simple:</em></u>
Rockwell painted a picture.
<u><em>Past Continuous:</em></u>
Rockwell was painting a picture.
<u><em>Past Perfect:</em></u>
Rockwell had painted a picture.
<u><em>Past Perfect Continuous:</em></u>
Rockwell had been painting picture for 2 hours.
D. as clearly defined as possible so in order to narrow your speech.
B.) The Manuscript for His New Book