C. because the enemy would have to cross the heavily guarded sea to get there
Explanation:
In his speech, Winston Churchil, prime minister of Britain during WWII, adresses the british to assure them that they are safe, and that the German army would have it really hard in order to invade british, because they´d find a sea filled up with mines, air bombings and the british army before they could even land a foot on shore and face the british army. They had the sea heavily guarded.
Romeo says this while talking to Benvolio (who's crying). Romeo is sad and Benvolio is being sad too because Romeo is. Romeo is explaining to him what love is to him and why its making him sad.
