TOEFL Reading: ETS-TOEFL阅读机经 - C41Z2U33M48C7185L$

Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information. A. Females may have chosen their mates based on the male's ability to win contests with other males, or perhaps they decided based on territory. B. The longer-horned opponent was more likely to win in a fight, which probably made him more attractive to females because of his physical characteristics or his ability to protect territory. C. Males engaged in contests in which they tried to wound one another with their horns while avoiding being hit by the horns of their opponent. D. An individual that was able to avoid its opponents' horns had a better chance of fatally wounding them and winning the contest for territory or females.