The answer calor is actually correct because if you place it in the sentence it says it is very hot
Honestly, it is not clear if Mario truly wants to, as the focus on the question is on Rosa. “Mario: Hola Rosa, ¿quieres estudiar para la clase de matemáticas hoy?” (Mario: Hello, Rosa, do you want to study for Maths’ class today?).
Thus, I believe the answer for this question is false. No further evidence has been given that the statement is true.
Verde is what yellow and blue = verde ( green )
To know I would need to know what the verb in the parentheses is.