The questions of economics address which of the following? check all that apply.
who
what
where
when
why
how

Explanation:

all of them are economics

1. What

2. Who or whom

3. How.

Explanation:

These are the three basic economic questions listed above. A society might decide to produce candy or cars, computers or combat boots. The goods might be produced by unskilled workers in privately owned factories or by technical experts in government-funded laboratories. When they are made, the goods might be given out for free to the poor or sold at high prices that only the rich can afford. The possibilities are endless.

Although every society answers the three basic economic questions differently, in doing so, each confronts the same fundamental problems: resource allocation and scarcity.

For a complete chain of economics, these three questions must be fulfilled.

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)