Which of the following was a pull factor that caused the dutch to explore the indies?

The choices can be found elsewhere and as follows:

the desire to profit from the trade of pepper and other spices found in the Indies 
the desire to increase the size of the Dutch population in Europe 
the need to find an alternate source of food following a great famine in Europe 
the need to protect Dutch military outposts in West Africa

The correct answer is the first option. A pull factor that caused the Dutch to explore the Indies would be the desire to profit from the trade of pepper and other spices found in the Indies. Hope this answers the question.