External setup time refers to:
a. the time it takes workers to set up a machine during scheduled maintenance
b. the time to complete setup activities that do not require that the machine be stopped
c. the time it takes equipment vendors to set up the machine
d. none of the above

The correct answer is "b.The time to complete setup activities that do not require that the machine be stopped".

Explanation: External setup time refers to the time to complete setup activities that do not require that the machine be stopped.

External setup is the term used to refer to when workers can perform maintenance without stopping the production process. The term "external" is used because maintenance can be performed "external" to the production process.

forbearance of student loan payments. under forbearance, your loan payments are postponed (or reduced) but interest continues to accrue during the period of forbearance. if you don't pay the interest during that period, the interest may be “capitalized,” which means it is added to your principal balance.