Please read the "Practice and Review: Consideration" on page $260$ of the textbook. Question $3$ asks: "What if John's neighbor made his promise to help reassemble the garage at the time he and John were moving it$?$ Suppose he said, 'Since you helped me take it down, I will help you put it back up$.\text{'}"$

What concept that you learned in this Chapter would lead you to the conclusion that John would NOT be able to enforce the above promise?

Question $1$Answer

a$.$

Pre$-$existing duty

b$.$

Illusory promise

c$.$

Promissory estoppel

d$.$

Past consideration