In which sentence is the word “substitute” most correctly used?

A. The substitute player was the star of the match, astounding all his teammates.

B. I use petrol as a substitute for electricity in my car, which is harmful to the environment.

C. I can’t have dairy, so I use water as a substitute, which is tasteless and unappetizing.

D. I can’t have dairy, so I use almond milk as a substitute, which is a healthier and tastier alternative.