Which operator can be used in string concatenation?

High-speed connections to the Internet are known as ________

A) analog B) broadband C) multicast D) baseband

Write a function to reverse part of the passed sound just between the passed start and end index.

In order to reverse part of the passed in sound, and not a copy of the sound, we need to copy out the entirety of the non-reverse section in order to avoid overwriting half of it as we reverse.