Adult insects have how many pairs of legs, wings, and antennae?

• A. 3 pairs of legs, one or two pairs of wings, and one pair of antennae
• B. 2 pairs of legs, two pairs of wings, and two pairs of antennae
• C. 3 pairs of legs, three pairs of wings, and no antennae
• D. 4 pairs of legs, one pair of wings, and one pair of antennae

Answer: (A)

Think about how adult insects are built. They have six legs, arranged as three pairs, one on each of the three thoracic segments. Wings can vary by species: many insects have two pairs of wings, but some have only one pair, and some have no wings at all. The head always carries a pair of antennae, two in total. So the description that matches this pattern is: three pairs of legs, one or two pairs of wings, and one pair of antennae. The other options would imply eight legs, three pairs of wings, or no antennae, which don’t fit insect anatomy.