What 2 factors increase the validity of a scientific experiment?

You can increase the validity of an experiment by controlling more variables, improving measurement technique, increasing randomization to reduce sample bias, blinding the experiment, and adding control or placebo groups.

Explanation:

Controlling more variables and improving measurement technique.

Btw, I like your profile picture lol

answer: i would say b.

explanation:

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;