Which definition of interaction design is correct?

a$.$

The extent to which a product provides the right kind of functionality so that users can do what they want to

b$.$

Designing interactive products to support the way people communicate and interact in their everyday lives

c$.$

Ways of restricting the kinds of user interaction or interpretation that can take place at a given moment

d$.$

How good a product is at doing what it is supposed to do$.$