The definition of an Indirect Source is a source that cites information but is not the original place it was published. So the correct answer would be D because it's a source cited in another source.
I view English being my strength subject and it helps me to increase my happiness because my confidence is increased.
If you study over the course of a week, you have a better chance of remembering the material than if you study for a couple hours the night before and cram.
B he starts off as a child in India, gets on the Japanese freighter to move the zoo, then when the ship gets caught in a storm he escapes on the lifeboat