Answer:
El sol
Explanation:
He is sad because it is rainy and cold so therefor the heat from the sun will make him happy.
<u><em>Spanish:</em></u>
Carlos debe ir a comer en "Ristorante DiAntonio" por que es un restaurante italiano.
<u><em>English:</em></u>
Carlos should go eat at "Ristorante DiAntonio" because it is an Italian resaturant and not a Spanish one.