Question

how are acids and protons related? (1 point)
an acid can donate protons to a base when they react.
acids are substances that contain fewer protons than bases.
an acid can accept a proton from a base when they react.
acids are substances that contain more protons than bases.

Explanation:

According to the Brønsted - Lowry acid - base theory, an acid is a substance that can donate a proton (H⁺) to a base in a chemical reaction.

Answer:

An acid can donate protons to a base when they react.