Answer :
The purchase of an aircraft by a domestic airline is (are) included in the investment.
What Is an Investment?
An investment is an asset or object purchased with the intention of earning income or gain. The term "appreciation" refers to a growth in the worth of an asset through time. When an individual acquires a good as an investment, the objective is not to consume the commodity but rather to use it in the future to produce wealth.
Investment is usually the outflow of some resource today—time, effort, money, or an asset—with the hope of a bigger payback later than what was first put in. For example, an investor may buy a monetary asset today with the expectation that it will give income in the future or that it will be sold at a better price later for a profit.
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