Answer:
a.
Step-by-step explanation:
From all of the answers provided it can be said that the one that is an example of proper texting etiquette would be applying the same timing guidelines to sending and receiving text messages that you would for speaking on the phone (such as not during a meeting or when in a social setting). Individuals want to receive a response to their text as soon as possible but at the same time do not want to be disturbed when they are in an important meeting, therefore knowing when and when not to send a message is just part of proper texting etiquette.