To solve this question, we need to understand what is meant by a "gerund." A gerund is a verb form that ends in "-ing" and functions as a noun.
Let's analyze the options:
Decide: This verb is typically followed by an infinitive, not a gerund. For example, "decide to go."
Want: Similar to "decide," this verb is usually followed by an infinitive. For example, "want to eat."
Enjoy: This verb is commonly followed by a gerund. For example, "enjoy swimming."
Thus, the correct answer is enjoy, as it is most often followed by a gerund.