Which of the following is true about theories?

A: They are formulated after several repeated investigations produce the same or similar conclusions

B: Theories are formulated after one investigation produces groundbreaking results

C: Theories are formulated during an experiment when a scientist predicts what is going to happen

D: They are formulated before an experiment begins so that scientists can properly conduct the experiment

1 answer

The correct answer is:

A: They are formulated after several repeated investigations produce the same or similar conclusions.

This reflects the scientific process, where theories are developed based on consistent evidence gathered from multiple experiments and investigations.