The dark regions in the starry night sky are not pockets in the univer

All correct in 3 mins 45 seconds, including 1 min 45 seconds to read.

1. According to the passage, which of the following is a direct perceptual consequence of interstellar dust?

(A) Some stars are rendered invisible to observers on Earth. - Correct
The dark regions in the starry night sky are not pockets in the universe that are devoid of stars as had long been thought. Rather, they are dark because of interstellar dust that hides the stars behind it.

2. It can be inferred from the passage that the density of interstellar material is
(E) not homogeneous throughout interstellar space - Correct
The average density of interstellar material in the vicinity of our Sun is 1,000 to 10,000 times less than the best terrestrial laboratory vacuum. --> since the passage talks about average density, we can infer that the density is not homogeneous

3. It can be inferred from the passage that it is because space is so vast that
(C) stars can be far enough from Earth to be obscured even by very sparsely distributed matter - Correct
It is only because of the enormous interstellar distances that so little material per unit of volume becomes so significant. Optical astronomy is most directly affected, for although interstellar gas is perfectly transparent, the dust is not.