Question

what type of evidence do scientists rely on most when studying reproductive success in animals? (1 point) random guesses personal observations data about animal populations expert opinions

Explanation:

Scientists rely on objective data for studying animal reproductive success. Data about animal populations provides quantifiable and objective information on factors like birth - rates, survival of offspring, etc. Random guesses are not scientific. Personal observations can be subjective. Expert opinions are secondary to empirical data.

Answer:

Data about animal populations