Please read the passage below and answer the question that follows.

Southwest Airlines is a company that has formulated a unique business strategy. It has consistently achieved above$-$average returns in a volatile industry plagued by issues of low profitability, weak employee morale, and poor customer satisfaction. Keys to Southwest Airlines' ongoing success include a point$-$to$-$point service targeted at delivering superior value to its customers in the domestic airline market, and a unique high$-$energy corporate culture.

Q$.$ The concept of 'fit between activities' $($as it relates to strategy formulation$)$ emphasizes how:

primary and support activities of a successful company capture value along the value chain

understanding the profit pool in an industry indicates areas where returns can be earned

it is difficult for rivals to match a tight$-$knit configuration of integrated activities than to imitate any single activity

the organizational culture of Southwest Airlines is the key to the success of the firm