Internal attributions are:

A) ability
B) effort
C) luck
D) both ability and effort

Internal Attributions

Refers to the inference that a person is behaving in a certain way because of something about the person, such as attitude, character, or personality.

Ability

The capacity of an individual to perform actions or tasks adequately, related to both natural aptitude and learned skills.

Effort

The use of physical or mental energy to achieve an objective or complete a task, often considered an important factor in determining success.