Answer:
≅ -1.7.
Explanation:
Let's calculate the change in quantity:

Let's now calculate the change in price:

Finally, let's calculate the price elasticity of demand:

To put it on a simple term, psychology is the study to know why our mind works.
Behavior is not the only thing covered by psychology. It's a huge factor of it, but not all of it.
Psychology also teach us on why people developed a certain opinion, how people developed a certain preference, how interaction with other people affect our minds, etc.
Answer:
B. linguistic relativity
Explanation:
The hypothesis of linguistic relativity, part of relativism, also known as the Sapir–Whorf hypothesis /səˌpɪər ˈhwɔːrf/, or Whorfianism is a principle claiming that the structure of a language affects its speakers' world view or cognition, and thus people's perceptions are relative to their spoken language.
Answer:
Telegraphy, is the right answer.
Explanation:
Telegraphy is the long-distance communication of textual information where the sender practices emblematic languages, known to the receiver, rather than a material transfer of an article carrying the information. Thus flag semaphore is a system of telegraphy. Though the ancient system of signalling was more extensive complex as in China, were usually not competent in transferring temporary text messages.
As per the question, Joe’s attempt to communicate using on a few essential words can be described as Telegraphy.