Is it okay to speak to the reader directly when writing a research paper?

Dogs make wonderful pets because they keep us happy and healthy, the topic sentence is "dogs make wonderful pets". can someone me write a unrelated sentences to the topic and can be eliminated. need asap

Read this passage from "the american dream." it does not say all white men, but it says all men. . how does the second part of the sentence relate to the first part?

Guess my height right answer gets brainiest