Answer:
No vengan tarde a mi fiesta - A tus amigos
No lleves much ropa - A tu mejor amigo
No salgamos solos - a los pasajeros en un tour contigo
No lleve una cámara grande - usted
Explanation:
When speaking in Spanish, the verbs must always match the nouns, even when giving commands in negative imperative form. But when speaking in second person singular, there is a formal form "usted", that conjugates differently, usually removing the -s from the verb conjugation. "Lleve" refers to usted so 4 matches B. "No lleves" is first person singular, so it must match with the only noun that's singular: a tu mejor amigo (to your best friend). The other two match equally in number and person, but one of the groups is your friends and the other one is a group of passengers. Because of familiarity you would invite your friends to your party and not want them to be late. To the passengers you could ask not to go on their own.
