contestada

For an experiment to produce useful data, what must happen?

A. It must be performed by a famous scientist.

B. It must prove a hypothesis correct.

C. It must be published in a famous journal.

D. It must be repeated several times.

Respuesta :

ItzJohn111

Answer: D

Explanation: It must be repeated several times. (You could have different results everytime. Kind of like a dice. If you only roll it once and get a 3, you will only think it rolls a 3 unless you roll it and get different results or unless you've seen a dice before.)

Otras preguntas