Before its final commercial release, a(n) version of software may be offered to certain test sites or to interested users free or at a reduced cost

beta version of software

Explanation:

The beta version of a software is the first release of the software that is not regarded as the final release usually given to a large number of people to use under real conditions. This version of software undergoes alpha testing before they are sent out to user and are usually almost a close-double of the final product in appearance, function, and feel. Nonetheless, changes in design are usually performed before releasing the final version.

the answer is b) 2nd

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step-by-step explanation:

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explanation: