3. the most desirable alternative given up as a result of a decision is: a. an opportunity cost b. a trade-off c. the production possibility d. the incentives to make a choice.

a. An opportunity cost

Explanation:

A trade-off is losing one property or ability of a product while gaining another property or ability.

Production possibility refers to the number of products that can be made with current resources available.

The opportunity cost is the cost of the most valuable alternative from a list of options where one has already been chosen. For example if you are going to watch a movie and if you weren't the next best option for you would be reading a book. So, the opportunity cost of watching the movie is not reading a book.

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 : -