Question

Thirty minutes of exercise per day can reduce your blood pressure. Which of the following is a guideline for establishing causality?

a) Look for evidence that smaller amounts of exercise produces a reduction in blood pressure.
b) Check if lower blood pressure is present or absent when exercise is present or absent
c) Perform a randomized, controlled experiment.
d) Control the number of minutes of exercise and blood pressure to get the same results.

Answer 1

Perform a randomized, controlled experiment.

Explanation:

Got answer right in challenge 4.2

Answer 2

perform a randomized, controlled experiment

Explanation: