Qual o oposto de um número positivo?​

Which one of the following is the correct rhyme to keep in mind when using the spanish counterparts to this, that, those and these? a “this” and “these” both have t’s, “that” and “those” don’tb “that” and “those” both have t’s, “this” and “these” don’tc “that” and “those” both have s’s, “this” and “these” don’td “this” and “these” both have s’s, “that” and “those” don’t

Alex: ¿qué vamos a hacer mañana por la tarde? lupe: visitar algunas universidades, regresaremos a casa. a. después de b. finalmente c. tarde d. temprano

Ineed with 6-20! my teacher didnt really explain