What is mean by final account

Theodore is writing a blog post on the relationship between music and a person’s mood. which of the following sentences might appear in his conclusion? a. do you have a particular song that always makes you feel better? b. a recent study shows that music can enhance a good mood and relieve a bad mood. c. whatever the reason, it is clear that music is deeply connected to human emotions. d. the researchers found that the type of music was less important than how much the subject enjoyed it.

The invention of photography was initially important because

Which item is an example of a primary source