A researcher tests whether the dosage level of some drugs (low, high) causes significant differences in health. To do this, the researcher randomly assigns rat subjects to receive a low or high dosage of the drug and records health-related measures in both groups. The type of method described is

A. experimental.
B. quasi-experimental.
C. correlation.
D. operational.


Ans: A

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Which of the following is an often-ignored responsibility of teachers?

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Members of this philosophical perspective ___________ vigorously oppose social promotions

Fill in the blank(s) with correct word

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What will be an ideal response?

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