Fatima is watching her pet cat, winter, napping in the sun. fatima is curious about the heart rate of winter when she is napping, so she develops this scientific question: does a cat's heart rate change while it is napping? she decides to develop a hypothesis to test this scientific question. what could fatima's hypothesis be?

The hypothesis is; A cat's heart rate changes while it is napping.

A hypothesis is a tentative statement which could be proved or disproved by subjecting it to rigorous experimentation.

A hypothesis is coined in line with the question that the experiment seeks to answer.

In this case, Fatima's question is; Does a cat's heart rate changes while it is napping?

So the hypothesis must be;  A cat's heart rate changes while it is napping.

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Explanation:

There are two hypotheses she could test:

A cat's heart rate changes while it is napping.

A cat's heart rate does not change while it is napping.

the first, second, and fifth options

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.