In which of the following situations would there be an enforceable contract despite the lack of a written contract?

Question $7$ options:

Jack agrees to build a garage for Sam after he finished the remainder of his $2-$year army hitch $($he has $14$ months left$).$

Jack leases a storage facility for duration of his $2-$year army hitch.

Contractor Joe agreed to build a $$250,000$ home for Sam on Sam's land, to be completed no later than $9$ months from the date of agreement.

Sam agreed to trade his vacation cottage with Joe in exchange for Joe's yacht.

Sam agreed to guarantee a loan for his friend Joe.