One-word sentences used by children under 2 years old to express their behaviors and reactions are called ______

When Mary looks at the following display, she tends to see horizontal rows rather than vertical columns of faces. This happens because ________ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

a. lines and patterns tend to be perceived as continuing in time and space. b. items that are alike in some way (such as in color, shape, or size) tend to be perceived as belonging together. c. items that are near each other tend to be grouped together. d. horizontal displays tend to be perceived as figure and vertical displays as ground.

Stress is experienced ________

a. only when we are faced with pleasant situations b. in pleasant and unpleasant situations c. only in life or death situations d. only when we are faced with unpleasant situations