单选题 According to the passage, theorists throughout history have considered all of the following as possible reasons for the ornamentation of male plumage EXCEPT
  • (A) Adornment attracts females on the basis of unconscious aesthetic preferences, increasing their evolutionary advantage.
  • (B) Adornment attracts females to males who resemble their preferred food source, thus contributing to the mating process.
  • (C) Adornment among males signifies heightened physical activity to females, thereby indicating evolutionary superiority.
  • (D) Adornment reduces the amount of energy necessary to frighten rival males, thereby conserving resources.
  • (E) Adornment in plumage frightens rivals away from a limited food source, thereby ensuring a dominant male's survival.


【正确答案】 E
【答案解析】