Why does douglass change his name so many times

He wants to protect himself from being a found.

Explanation:

Frederick Douglass has made himself the most persuasive victim of the evils of slavery and prejudice. Although it was illegal to teach slaves to read and write, Douglass nevertheless learned and secretly taught other slaves. After fleeing, he tirelessly participated in abolitionist gatherings across the North and the British Isles for more than two decades. Before fleeing, his surname was Bailey, but if he used his real surname, it would be easier to be discovered and captured again, so he changed his surname to Johnson over the years, decided to change his surname again, this time adopting the surname Douglass.

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)

such as answering phones, scheduling appointments, sending faxes, and filing documents.

explanation:

all of the following except for c.foreign government