Final answer:
Metacognition is when the combined effect of several elements is greater than the sum. Passes is an acronym for the traits of an ideal study group. Synergy is knowing about knowing.
Step-by-step explanation:
1. Metacognition: b. when the combined effect of several elements is greater than the sum.
2. Passes: an acronym for the traits of an ideal study group.
3. Synergy: c. knowing about knowing (from unit one).
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