A species is best defined as a group of organisms that

  1. look exactly alike
  2. eat the same food
  3. can reproduce to produce fertile offspring
  4. live in the same habitat
Answer

C) can reproduce to produce fertile offspring

This is the biological definition of a species. O Level Biology · Topic 2 Classification · 2.1 Concept and use of a classification system

Biology MCQ · More O Level Biology: Classification MCQs · Practise