Which One of the Following Best Describes Long-Term Instructional Objectives

Which one of the following best describes long-term instructional objectives?

A) Students may make gradual progress toward them but never achieve them completely.
B) They are inappropriate for elementary school children, who may become frustrated when they do not reach them.
C) They are inappropriate for high school students, because adolescents' attention is typically focused more on short-term goals.
D) They are most appropriately used for lower-level skills at all grade levels.