Select all the correct answers.
which two statements from the passage best illustrate the central ideas?
for we know that the study of the stars, though undertaken for selfish reasons
and pursued in the spirit of charlatanry, led at length to physical science, while
the study of dreams has proved as unprofitable as the dreaming of them.
before the dawn of history mankind was engaged in the study of dreaming.
to use professor bergson's striking metaphor, our memories are packed away
under pressure like steam in a boller and the dream is their escape valve.
but the psychologist rarely paid attention to dreams except incidentally in his
study of imagery, association and the speed of thought.
the subject of the significance of dreams, so long ignored, has suddenly become
a matter of energetic study and of flery controversy the world over.

The two statements that illustrate the central ideas are the following: “Before the dawn of history mankind was engaged in the study of dreaming.” And“The subject of the significance of dreams, so long ignored, has suddenly become a matter of energetic study and of fiery controversy the world over.”

Explanation:

The central ideas are the study of dreaming and how ignored this was. This passage explains why dreams could be seen as not very important. However, people have become more conscious about it and now research about dreams has increased.  

the answer is a and b

Explanation:

the purpose of the heading in the passage is to identify who is telling the story.

this excerpt is part of the book sugar changed the world (2010) written by marc aronson and marina budhos. as the book has been written by two people, the heading "marc" indicates that this specific excerpt is being narrated by aronson. in the fragment, marc describes his grandfather's story after hearing it from his cousin. however, there are other excerpts where budhos is the one that tells the story of her family.

aronson and budhos, who are husband and wife in real life, decided to write sugar changed the world when they found out how sugar, which had an important role in slavery and economy, changed their ancestors' lives.