Answer: Possibly, a pulmonary exercise stress test.
Explanation:
Answer:
The answer is A, an object must reflect light.
Explanation:
You can't see anything if there isn't any light to see. Therefore something would have to reflect light in order for us to see it. Hope this helps!
I believe the answer is D
I'm sure the answer you are looking for is specific to your class, but I would say that the nurse should provide something like, "The tumor is most likely benign, but until we test further, we can't know if it's malignancy."
A, B AB and O, O being the most useful, because O blood can be given to everyone, but also the most selective, since they can only receive O blood