Question

if roger wants to develop a routine, what must he do?
seguir una dieta mal balanceada.
seguir una dieta balanceada.
seguir una rutina.

Explanation:

A balanced diet is important for overall health and can support the development of a routine. A mal - balanced diet is not beneficial. Just "following a routine" is circular. So, a balanced diet is the most reasonable choice among the options for developing a routine.

Answer:

Seguir una dieta balanceada.