help!!!!!!!!!!!! >>>>>Which number set contains all rational
numbers?

The only set that only has rational numbers is the first one:
{1/3, -3.45, √9}
A rational number is a number that can be written as the quotient of two integers.
If we look at the first set, the elements are:
In the other sets we can see elements like:
√37, √44, or √2 which are all irrational numbers, then the only correct option is the first one.
If you want to learn more about rational numbers:
https://brainly.com/question/12088221
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