Answer:
The correct answer will be option C (Sprout every year, year after year).
Step-by-step explanation:
Perennials are the herbaceous plants which live for many years or seasons. These plants die in falling season and then again come back in spring from the roots which were dormant during the winter season.
They have longer life-span and sprout every year like Hibiscus, Lavender, Lilies and Rose Bushes.
Thus, option C (Sprout every year, year after year) is the correct answer.