Jake attempts to contract with john on behalf of jerry without jerry's legal authorization. in such a case, jake and john cannot create a valid contract

In such case, Jake and John cannot create a valid contract because one party is not competent.

Explanation:

In this case, Jerry has not provided Jake any legal authorization to contact John on his behalf. This shows us that Jake is not a competent party since he does not understand that authorization is needed and thus the contract will render invalid.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.