Answer: 42
Step-by-step explanation: The median is the middle number in the data set when the data set is written from least to greatest.
So let's write our data set from least to greatest.
We have 37, 41, 42, 42, 43, 44, 45.
Now we can see that the middle number is 42.
I have underlined the digit above.
So the median is 42.