Hypothesis: mallard ducks grow to a larger size when fed on corn than when fed on rhubarb
which statement of purpose best defines the objective of an experment to test this hypothesis?
a. to see if mallards will eat corn and rhubarb
b. to determine the rate at which mallards eat corn when it is mixed with rhubarb
c. to measure the average size of mallard ducks
d. to compare the average weight of mallards raised on corn to the average weight of mallards raised on rhubarb

I say c

Explanation:

seems really along with the question unlike b but could also be d

c

explanation:

idk

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u