Value chain analysis is a tool used to:

Question $48$ options:

determine how long an opportunity in a firm's external environment can be expected to last.

all of those listed are correct uses.

concentrate on a firm's internal environment without exercising concern about the actions of those companies with which the firm competes.

analyze a firm's external environment for value$-$creating opportunities.

understand the parts of the firm's organization that create value and those that do not.