Which of these is an example of morphology?o
a. We use polite phrases like excuse me and thank you when addressing someone of higher social status.
b. We recognize that the nonsense word hufflelumps could be a real word in English, but ngapkez could not.
c. We tend to structure paragraphs with a main idea supported by details.
d. We know the words unique, uniform, united, and universe all contain the root uni, meaning “one.”