What is the bronsted-lowry definition of an acid?

What I found on google made it seem like the third one would be the correct answe

The Bronsted-Lowry definition of an acid is a compound that donates an acid.

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later