Phone calls are

A) incapable of conveying nonverbal signals.
B) only acceptable for external communication.
C) capable of offering the give-and-take of in-person conversations.
D) no longer practical due to IM and texting.

While phone calls are unable to convey nonverbal signals, they are still capable of offering the give-and-take of in-person conversations, allowing for real-time communication and exchange of ideas. Additionally, phone calls are still widely used for both internal and external communication in many industries, despite the rise of text-based communication methods.