In the following scenario which option identifies the type of variable represented by age A researcher wants to study the relationship between age and resting heart rate she selects subjects and record their age and heart rate
A. attribute variable
B dependent variable
C operational variable
D confounding variable

i believe it would be c: tons.

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

b a mature ovary of a plant.