Helga Stops and Helps Bjorn Change a Flat Tire Along

question 145

Multiple Choice

Helga stops and helps Bjorn change a flat tire along the road because she figures that one day she'll need help and someone will return the favor. This best illustrates the idea of __________.

• A) paying it forward
• B) reciprocity
• C) karmic law
• D) evolution

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Definitions:

EEG

Electroencephalogram, a test that detects electrical activity in your brain using small, flat metal discs attached to your scalp.

Stage 1 Sleep

Stage 1 sleep is the initial phase in the sleep cycle, characterized by light sleep from which one can be easily awakened.

Pineal Gland

A small endocrine gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.

Melatonin

A hormone that regulates sleep-wake cycles, produced by the pineal gland in the brain.