Answer:
The answer is: C) If Jack does not accept the $100,000, there is a valid contract for the sale of the business, without a non-competition clause.
Step-by-step explanation:
Non competition clause (NCC) is a legal contract that binds one party to not work for or start a rival company (in the same trade) that will compete against the other party.
In this case, Jack said he would probably agree to sign a NCC if they paid him $100,000 more, but he never said he would sign for sure the NCC. So Jack can refuse to sign the NCC and reject the extra $100,000. The selling contract would still be valid, it was never stated that if no NCC was signed, then the contract would be dismissed.