The Ebro Delta (delta de l'Ebro) is the largest humid zone in Catalonia. It is the second most important natural aquatic habitat in Spain after the Doana National Park. The Delta is of international importance for its plant species and its fauna.
Can we infer the following?
The Ebro Delta (delta de l'Ebro) is not the smallest humid zone in Catalonia

OPT: I. Yes. II. It's impossible to say. III. No.
The answer is:
I.