Use the Following Scenario for the Next Question

question 78

Multiple Choice

Use the following scenario for the next question.
A 26-year-old biologist makes a trip to study alien life forms in a distant planet 10 light-years away. The round trip including a stay of 1 year in the distance planet takes 21.5 years according to the clock on earth. The biologist's son is 3-year-old when he left. Assume that the planet is not moving with respect to Earth, and the speed is the same for both outbound and inbound part of the journey.
-What is the total distance traveled according to the biologist? Give your answer in
Light-years.

• A) 1.69
• B) 4.39
• C) 6.78
• D) 7.45
• E) 9.45

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Definitions:

Ego

To Freud, the rational aspect of the personality, responsible for directing and controlling the instincts according to the reality principle. To Jung, the conscious aspect of personality.

Libido

in psychoanalytic theory, refers to the sexual or life drive that motivates individuals to seek pleasure and avoid pain.

Stimuli for Instincts

External or internal inputs that trigger natural, instinctive responses in an organism.

Hunger

The physical sensation or condition of needing food, driven by the body's need for nutritional intake.