8 minute 34 seconds including the reading time. All answers correct
Quote:
115. The passage is primarily concerned with
(A) defending a controversial approach
(B) criticizing an accepted view
(C) summarizing research findings
(D) contrasting competing theories
(E) describing an innovative technique
The passage is a first person description. Also, the author has described the findings, contradiction with theory, more findings etc.
Therefore, (C) is most suitable
Quote:
116. The authors’ study indicates that, in comparison with the outermost regions of a typical spiral galaxy, the region just outside the nucleus can be characterized as having
(A) higher rotational velocity and higher luminosity
(B) lower rotational velocity and higher luminosity
(C) lower rotational velocity and lower luminosity
(D) similar rotational velocity and higher luminosity
(E) similar rotational velocity and similar luminosity
Passage states that the luminous intensity decreases with the increase in distance from the centre. However, contrary to expectations, rotational velocity remains similar or increases.
So moving from outermost region to the region just outside the nucleus, luminosity increases, while rotational velocity remains the same. Therefore, (D)