Activities which are profit-motivated and require a relatively high level of involvement from the taxpayer are referred to a

Business

Explanation:

Business is selling a product or carrying out services with the end product revolving in being paid. Most times the payment or revenue generated in business is usually high although it comes with a lot of commitment and consistency. Any registered business most be taxed by the federal or state government. Activities which are profit-motivated and require a relatively high level of involvement from the taxpayer are referred to a business

the answer is d) it provided irrigation for farming.

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