Rosa records the distance that a toy car rolls and the time it takes to cover the distance. What scientific practice is this? collecting data, asking a question, providing explanations or communicating results

Collecting data.

Explanation:

The keyword record shows that Rosa is collecting data.  Data is "facts and statistics collected together for reference or analysis".  The distance that the toy car travels, and the time it takes to cover the distance are both examples of quantitative data, or numbers.  As she is taking this data, and collecting it, she is currently collecting data.

A

Explanation:

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.