Sunshine Crackers introduces Wheat Flats,a cracker with more fiber, fewer calories, and great flavor. Wheat Flats is a great success. This is an example of __________ innovation.

__________refers to the follow-up activities that a service firm might engage in after a customer transaction

Fill in the blanks with correct word.

Exhausted and tired, I went home and immediately collapsed on the couch

A) noun B) verb C) adjective D) adverb