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Choose the diagram (a)–(d) that best represents Mammals, Animals that lay eggs and Platypus.

Competition practiceVenn Diagrams
  • A(a)
  • B(b)
  • C(c)
  • D(d)

Step-by-Step Solution

The platypus is a mammal that lays eggs, so the Platypus circle lies inside both. Most mammals do not lay eggs and most egg-layers (birds, snakes) are not mammals, so Mammals and Animals that lay eggs overlap, with Platypus inside their common part.
Answer: B) (b)

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