"When her sister was born, 4-year-old Gracie began sucking her thumb again and wanting her mother to rock her. The defense mechanism exemplified here is:"

Regression

Explanation:

Sigmund Freud is considered the father of psychoanalysis which is a school of therapy that focuses a lot in the unconscious and how our early development influences our later behaviors.

According to him, there are defense mechanisms which are defined as the mental processes that are often unconscious and that protects us from anxiety that we would feel if they weren't there. In other words, they protect us from feeling anxious.

One of these mechanisms is called "regression". Regression was actually proposed by Anna Freud and it refers to a process where the ego goes back to an earlier stage of development because of a stressful situation. In other words, the mind of the person goes back to a period where they felt safer and they act as if they were in that period. This mechanism is usually observed in older siblings when a new baby is born.

In this example, 4-year-old Gracie began sucking her thumb again and wanting her mother to rock her, these are behaviors that are seen in younger children and therefore we can see that she went back to an earlier stage of development because her sister was born and this makes Gracie anxious. Thus, this is an example of regression.

its kind of blury sorry

uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -