Bilbo T. Baggins had a car wreck, and just signed a settlement agreement w

Bilbo T. Baggins had a car wreck, and just signed a settlement agreement
with the other driver’s insurance company, Middle Earth Mutual. In exchange for promising not to sue Middle Earth’s insured, Bilbo had to also promise not to sue either party. In this example, which key element of contract does Bilbo’s promise not sue represent?

a. Consideration

b. Good sense

c. Offer

d. Capacity

e. All of the above.