Oral communication:

should be used when one is trying to communicate an explanation as well as an emotion.

is the most effective method for communicating precise or complex information.

is a one-way process, and the primary focus is on the speaker.

tends to eliminate "information overload" among participants.

when one is trying to communicate an explanation as well as an emotion.

Explanation:

Oral communication is defined as the process of verbally passing information and ideas from one person to another or group. It can be both formal and informal.

some of the example of oral communication

Face-to-face Telephonic conversations Discussions in the meetings video conference

As we can see that in all the above mentioned method explanation and expression can be passed on to listener hence

correct option will

communicate an explanation as well as an emotion