Five-year-old Donna uses shorter, simpler sentences when talking to her baby brother. She speaks in a very informal way with her friends and uses a more formal language with her father's friends. Donna is demonstrating her grasp of

pragmatics  

Explanation:

Pragmatics, in psychology, is described as the study of an individual's capability of "natural language speaker" to communicate beyond the factor that has been stated explicitly. An individual's capability to understand and comprehend speaker's or someone else's intended meaning. It encompasses the process through which words have been utilized by a person.

As per the question, Donna is demonstrating her grasp of pragmatics.

the earthquake in haiti was a magnitude of 7.0 according to the u.s geological survey yet the smaller earthquake in haiti killed more than 200,000 and left more than 1.2 million people homeless. the chile earthquake was a magnitude of 8.8 and 500 times more stronger but chile's earthquake only injured 712 people.

answer; u.s senate;