Answer: If you translate I can help you
Explanation:
The change in behavior illustrates a mood linkage.
Mood linkage refers to a psychological phenomenon when individuals absorb the emotion of other people around them.
In this particular case, cathy's friend feel the emotion that displayed by cathy and unconsciously absorb it which make them feel similar emotion without them realizing it.
In ancient times, salt was a valued commodity, often used to bartar, and was necessary for food preservation. With modern conveniences, it is not needed as it was in the past. Salt had much less value now.
Answer: From the given option, <u><em>theory</em></u> is the most suitable one.
Theory is a arguable or scientifically satisfactory broad generalization or organic structure of rule offered to explicate phenomena. It also consists of a systematic body of ideas about a particular topic or phenomenon.
<u><em>Therefore, the correct option in this case is (d); theory</em></u>
