Perigynous flowers are found in

Explanation

Mustard (Brassicaceae) has hypogynous flowers, meaning the ovary is superior and the other floral parts are attached below it. The sepals, petals, and stamens are attached to the receptacle, which is the expanded base of the flower that supports the floral organs. The ovary is typically four-lobed and contains numerous ovules. Rose (Rosa spp.) also has perigynous flowers. The hypanthium is typically more developed in roses than in China roses, and it is often fleshy and fragrant. The sepals, petals, and stamens are attached to the rim of the hypanthium. Guava (Psidium guajava) has epigynous flowers, meaning the ovary is completely inferior. The sepals, petals, and stamens are attached to the hypanthium, which surrounds and fuses with the ovary. Cucumber (Cucumis sativus) has epigynous flowers. The hypanthium is typically less developed in cucumbers than in guavas, and it is not fleshy or fragrant. The sepals, petals, and stamens are attached to the rim of the hypanthium. Therefore, the correct answer is Rose.