Question

Complete the sentence with a suitable option:
The authors propose all of the following as possibly contributing to the "missing matter" in spiral galaxies EXCEPT ____________.

• A. Massive black holes
• B. Small black holes
• C. Small, dim stars
• D. Massive stars
• E. Large planets

Answer 1

Answer: (D)

Massive stars

"Such dark matter could be in the form of extremely dim stars of low mass, of large planets like Jupiter, or of black holes, either small or massive." This sentence suggests that dim stars, large planets, or black holes could be contributing to the 'missing matter'. The sentence does not mention large star as a possible factor. Thus, option D can be the only answer.