Answer:
Cuando voy a la playa me gusta tomar sol.
Explanation:
Cuando voy a la playa me gusta tomar sol. In English this means: hen I go to the beach I like sunbathing. Note that option B says "tomar el sol" but the correct expression is without the "el", just "tomar sol". It's the equivalent to sunbathe. "Navegar la internet" means to surf the web, which is a rare thing to do at the beach. "Sacar fotos" means to take pictures and "montar a caballo" means to ride a horse.
