Guys can u please check whether these answers are correct or wrong

Which situation might occur in a conflict of character versus nature? a. a society disapproves of a character’s behavior. b. a character suffers from a serious illness and eventually dies. c. two characters argue over a difference of opinion. d. a character is unable to decide on his opinion of another character.

Dogs make wonderful pets because they us stay happy and healthy. the topic sentence is "dogs make wonderful pets." , is this correct? i keep doubting myself.

In researching his history report about the civil war, why is ariq most likely to use secondary data than primary data?