What evidence from The Land, Part 4 best supports the claim that Paul questions his father’s motives? Paul is upset that his father brags about his riding skills. Paul is upset that his father invites Mitchell on the trip. Paul is upset that his father calls him “my boy” instead of “my son.” Paul is upset that his father volunteers him to ride a stallion.

Paul is upset that his father calls him "my boy" instead of "my son."

Explanation:

''The Land'' is a novel published in 2001 and written by Mildred D. Taylor where Paul-Edward Logan is the main character of the story. He is multi-racial and he is a son of white landowner, Edward Logan.

Paul and his sister Cassie are multi-racial because of the affair that their father had with a slave that was half Native American and half black, Deborah Logan. Because of their situation there is a lot of questioning in this novel.

Paul was working for his father and he was upset many times because of him and in Part 4 we can see that he was upset because he called him my boy. Later on, Paul and Mitchell escaped from Edward Logan.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

learning how to embrace the effects of colonialism is one of the central ideas of the play.