Answer:
A. Creo
Step-by-step explanation:
The verb "crear" means to create or to make in this context.
"¿Qué haces toda la semana?" is asking "What do you do all week?"
The appropriate response would "A. Creo" becuase that answers the question. The translated answer "Creo páginas Web en el Internet." translates to "I create website/web pages on the Internet".