Zach is a franchisee with Digger's Doggies, a chain of hotdog shops. He was doing well until several other Digger's Doggies franchisees got in trouble and were forced to close their shops. Soon afterward, Zach's business declined and was also forced to close. This is an example of:

coattail effect

Explanation:

The 'coattail effect'  is a situation of being pushed out of business as a profitable franchisee due to the failure of fellow franchisees.  The reason investors opt for a franchise business is to ride on the success of the company brand name. However, there a risk that should some franchisees start going down; they may drag the others with them.

The term coattail effect is used in business to refer to the same effect as in politics.  In the political arena, the coattail effect is a phenomenon where a popular political candidate running for a top seat attracts votes for other candidates of his party.

The correct answer is letter "C": the coattail effect.

Explanation:

The coattail effect is a term primarily used in Politics that describes a situation in which a candidate running for office, who is usually at the top of the list of preferences, helps to attract voters to other candidates. In economics, the term may also have a negative connotation. It means that businesses belonging to the same industry are dragging each other to failure because of factors other than competition.

the answer is . a novel has no sub-plot, but a novella does