The answer is B
Hope this helps :)
It is a fact because the text said it so it is true
The sets of lines are: "And remember Beauty, Five-Wits, Strength, and Discretion/They all at the last do Everyman forsake" and "For after death amends may no man make,/For then mercy and pity doth him forsake."
The key word in finding this answer is "forsake," which means "abandon." The doctor is listing several abstract ideas (beauty, strength, etc.) that forsake or abandon him "in the end" and "after death." If all these traits are abandoning him, then we can infer that the doctor must go on this last journey alone.
