Why didn't early portuguese and dutch explorers decide to create settlements in australia?           a. it was already claimed by england.   b. the dutch and portuguese had a policy of creating no settlements.   c. local natives successfully defeated dutch and portuguese forces.   d. they didn't think the land was suitable for settlement. what is the write answer it is not c

I believe the correct answer is D. They didn't think the land was suitable for settlement. 
Portuguese and Dutch explorers went mostly to the Americas, where they had a lot of colonies - even today, many places in both South and North America exist thanks to these nations. However, they didn't think Australia would be suitable for their needs, which is why they didn't colonize it, but Great Britain did.