A value chain is a set of: Group of answer choices robotically controlled conveyor belts that deliver product quickly from manufacturing stations to shipping containers. large firms that are vertically integrated. a large number of small firms that dominate a given market. similarly profitable firms competing against each other in any given industry. activities through which a product or service is created and delivered to customers.

activities through which a product or service is created and delivered to customers.

Explanation:

In simple words, A value chain can be understood as the business model that outlines the whole process of creating a product or service. The processes involved in taking a commodity from conception to dissemination, as well as everything in among as sourcing raw materials, production operations and marketing activities—make up a value chain for firms that create things.

the assumption the narrator makes in this excerpt is that the messages he heards were going to hurt the narrator's mom; the narrator just springs in to action. the narrator doesn't specify in this excerpt why he believes that the messages present a problem that requires protection.

d. to get countries or companies to stop doing something objectionable.