Final answer:
Convergent and divergent series are terms used to describe the behavior of infinite sequences or series. A convergent sequence or series has a clear limit or sum, while a divergent sequence or series does not.
Step-by-step explanation:
Convergent and divergent series are terms used to describe the behavior of infinite sequences or series. A convergent sequence or series has a clear limit or sum, while a divergent sequence or series does not.
In the given options, a is labeled as convergent with a limit of infinity. This means that the sequence associated with option a is increasing without bound. Option b is labeled as divergent, indicating that the associated series does not have a clear sum. Option c is convergent with a sum of 1. Lastly, option d is divergent, meaning that the series associated with it does not have a clear sum.