Respuesta :
Option B, Down
Mom has to descend the basement stairs.
You can get rid of down, because the word descend means to go down.
The word or phrase that should be deleted is: b. Down.
What is Tautology?
Tautology is the repetition of the same thing using two words. In the sentence above, the word, descend means to come down. There is no need to add down after it.
So, 'down' should be removed to avoid committing the grammatical blunder known as a tautology.
Learn more about tautology here:
https://brainly.com/question/4173398