Eighteen- to 24-month-olds have often learned to regulate simple emotions through such strategies as

Question

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The text states that 18- to 24-month-olds have often learned to regulate simple emotions through strategies that include "compressing their lips or knitting their brows" and "distracting themselves from unpleasantries." Therefore, choice D, which includes both of these options, is the best answer. The text does not mention compliance with emotional display rules of their culture, so choices A, B, C, and E are incorrect.

Eighteen- to 24-Month-Olds Have Often Learned to Regulate Simple Emotions