If a borrower defaults on a bond, it means that the borrower -did not pay back the loan on the maturity date.
-has paid back the loan on the maturity date.
-has one year to pay before facing possible jail time.
-has paid back the loan prior to the maturity date.
-only has to pay a portion of the loan back.

Default is the failure to repay a debt including interest or principal on a loan or security. A default can occur when a borrower is unable to make timely payments, misses payments, or avoids or stops making payments. ... Default risks are often calculated well in advance by creditors.

Explanation:

the correct answer on edgen is:

(c.) prevent the spread of communism.

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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 : -