Based on the fact that the snake was placing the mice one - by - one into a jar, this is A. Combining sets.
<h3>What does combining sets entail?</h3>
When sets are combined, it means that numbers from a certain set of variables are combined with those from another set.
The snake had captured the mice separately which means they were in different sets. Putting them into one jar means they are being combined so this is combining sets.
