Regarding consideration, the following questions can help determine whether there is a contract rather than a gratuitous promise:

Is the consideration past consideration?

Is the proposed consideration legal?

Is there consideration flowing in both directions?

Does it have value in each direction?

If not, is there an exception?

Multiple Choice

Numbers $1$ to $5$ are vital, no exceptions.

Numbers $1$ and $2$ are optional, but a failure in $3$ or $4$ can be saved by $5.$

Any one of numbers $1$ to $5$ determine there is a contract.