The correct answer is C: Both similarities and differences. The passage states that 'a given species includes all those individuals which have a strong similarity in appearance to one another and which are distinct in appearance from other such groups.' This indicates species are defined both by similarities among themselves and differences from other groups.
A.Similarities only
B.Differences only
C.Both similarities and differences✓ Correct
D.None of the above
Explanation
The passage states that 'a given species includes all those individuals which have a strong similarity in appearance to one another and which are distinct in appearance from other such groups.' This indicates species are defined both by similarities among themselves and differences from other groups. Hence option (c) — both similarities and differences — is correct.
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