Question

if dr. craig has conducted a study on the effects of exercise on thoughts of sadness. in order for their work to be considered verifiable, _______.

• it should make predictions about future events
• it should not have any mistakes in the procedure
• it should be capable of being disproved
• it must be replicable by another researcher

Explanation:

Verifiability in scientific research means that other researchers can repeat the study using the same methods to confirm the results. Predicting future events relates to testability, freedom from procedure mistakes is ideal but not the core of verifiability, and falsifiability is about being disproven, which is a different concept. Replicability directly enables verification of the study's findings.

Answer:

it must be replicable by another researcher