Question

¿Cuál de los siguientes mandatos negativos no está escrito correctamente? No caces. No caes. No toques.

Answer 1

"No caces" es escrito incorrectamente, pero lo puedes escribir, "no te caces" 

Answer 2

The wrong command is NO CAES.

Step-by-step explanation:

That command is wrong because it is not a command, as it is more like a warning or fact. It is not being properly conjugated; to be written in a correct form it should be written as: NO CAIGAS.

NO CAES is written in the simple present form, the main verb CAER is only conjugated with the second-person singular TÚ.