Which is an example of a pull factor resulting in immigration

Answer the questions in the image for zoom in to read : )

Plz me in 1756 george washington was sent on a mission to, a. build a fort at the point where the allegheny and monogahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio valley.

What did the puritans form to establish their own new world colony?