Which design principle below is correct?

a$.$

Visibility refers to interfaces that have similar operations and use similar elements for achieving similar tasks

b$.$

Feedback is an attribute of an object that allows people to know how to use it intuitively

c$.$

Affordance is an attribute of an object that allows people to know how to use it intuitively

d$.$

Constraints refers to interfaces that have similar operations and use similar elements for achieving similar tasks.