What class is your favorite? (Listed below choose what class is your favorite and why you chose that class.)

My favorite class is history.

Explanation: History is my favorite class,because i get to know more about the world we live in.

math

Explanation:

because i am sted mor the number

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."