Which of the following could you yourself know by direct observation?

A) whether it is raining
B) what year you were born
C) the first president of the United States
D) the origin of our planet
E) the inner life of atoms

Direct Observation

A method of gathering data by watching behavior or phenomenon in its natural setting without manipulation or control by the observer.

Raining

The precipitation of water from clouds in the form of water droplets.

Inner Life

Refers to a person's internal emotional, spiritual, or intellectual world and experiences.