Final answer:
Punctuation helps readers interpret a written message and a full stop following a text can convey insincerity. The correct choice of claims are: Punctuation helps readers interpret a written message and A full stop following a text can convey insincerity.
Step-by-step explanation:
The author makes two supporting claims to argue that people should be cautious when using punctuation in texts:
- Punctuation helps readers interpret a written message. Punctuation, such as periods, question marks, and exclamation points, helps convey the tone and meaning of a sentence. Using punctuation correctly can prevent misinterpretation and confusion in a text message.
- A full stop following a text can convey insincerity. The author mentions that a period used at the end of a text can potentially send a negative message. In text messaging, the use of a period can be perceived as abrupt or insincere, so it is important to be cautious when using it.