B. a fine is issued but can be avoided with proof of a helmet purchase
Explanation:
In the passage it states that the first time you get caught without a helmet, if you are under the age of 16, you may avoid a fine if you show proof that you have purchased a helmet.
Nosotros podríamos ir a ver una Película. Nosotros podemos ir a un parque de diversiones. Nosotros tal vez podamos salir a comer. Nosotros podíamos patinar en hielo.