O1 quadrinho da tira retrata uma sala de aula . levante hipóteses: qual era o assunto da aula? justifique sua resposta

no quadro verde está escrito , precisa-se de empregados, assiste-se a bons filmes , vende-se casas

Google translate:
The 1 strip comic portrays a classroom. Raise hypotheses: What was the subject of the class? Justify your answer

In the Green box it is written, employees are needed, good movies are watched, houses are sold

The subject of the class is ENGLISH. I knew this due to the dialogue between the characters.

The dialogue goes:
quem chegou? - WHO ARRIVE
o sujeito indetermindo - THE INDETERMINATE SUBJECT

On the green box, the terms employees, movies, and houses are the subjects of the sentence. They are also indeterminate because their is no term used to specify which employee, movie, or house. 

B. is the answer. mark me as brainliest. i need 2 more to level up.

The era was mesozoic