The basic aspects of grammar are mastered by most children by age

a. 3 years old.
b. 6 years old.
c. 9 years old.
d. 11 years old.

b. 6 years old.

Psychology

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Which of the following countries frequently have arranged marriages?

A) Canada B) India C) Mexico D) Japan

Psychology

Humans respond to different wavelengths of light by experiencing differing

a. hues. b. levels of brightness. c. amounts of saturation. d. amplitudes.

Psychology