Answer:
Economic duress
Step-by-step explanation:
We say there is an economic duress during a contract when one party to the contract threatens to terminate the contract if the other person does not agree to their demands. Brent is asking for more money, if he does not get this, he says he would leave the work unfinished.
When this happens, the other party may be left stuck and may have no option than to agree to the new demands of the contract.