When Sheila is in Country A, she is considered to be black, but when she travels to Country B, she is considered to be white. Given what you know about the social construction of race, which of the following best explains this situation?
a. Sheila sometimes says that she is black and sometimes says that she is white.
b. Sheila's race varies because each country has defined race according to different criteria.
c. Sheila's gender makes it possible for others to interpret her race in different ways.
d. In one country ethnicity matters more than race, and in the other the opposite is true.

 Option (b) is correct option  

Explanation:

According to the question,different countries persist varying opinion and beliefs on social identity of person in community as race trait according to their country's criteria. Thus, in Country A Sheila is considered black whereas Country B considers her white as per race criteria.

Other options are incorrect because of white and black saying of Sheila, gender of Sheila or ethnicity priority in a country are not main reasons due to which Sheila is recognized white and black in different countries. Thus, the correct option is option(b).

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 : -

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