Gretchen is reading the facial expressions of her mother and father in order to her interpret the un-familiar, ambiguous situation. gretchenâs behavior is known as:

Social referencing.

Explanation:

While acquiring new knowledge of environmental events, infants are able to regulate their attitudes towards people and objects in compliance with the affective display of their caregivers. Social referencing refers to the observation of facial expression by children to understand the situation, persons and the environment around them.

the correct answer is 2.

a slump in geology means a mass movement process of slope failure. a mass of rock or unconsolidated material drops along a slip surface. in other words, rock layers move a short distance down the slope. the slump block is an intact block (2), without any landslide material.

in this image, 1 is the surface of rapture (scarp), 2 the slump block, 3 main scarp (crown), 4 base of rapture with debris flow.

slumps are caused by clear cutting on unstable soils and the sagging of earth, in coastal areas they are due to wave infiltration.

answer; (d) none of the above;