The correct answer is A. petal.
A reptile is a cold-blooded animal that has scales or scutes on its skin. Lizards are a type of reptile. A flower is a plant that has petals, sepals, a stamen, and a pistil. A petal is a part of a flower that is usually colorful and attracts insects.
Option B, stem, is not the correct answer because a stem is a part of a plant that supports the leaves and flowers. Option C, daisy, is not the correct answer because a daisy is a type of flower. Option D, alligator, is not the correct answer because an alligator is a type of reptile.
The analogy “reptile is to lizard as flower is to petal” is a simile. A simile is a comparison of two unlike things using the words “like” or “as.” In this case, the two unlike things being compared are reptiles and flowers. The two things being compared are similar in that they both have parts that are important for their survival. For reptiles, the important parts are their scales or scutes, which protect them from the environment. For flowers, the important parts are their petals, which attract insects that help to pollinate the flower.