I have to answer what is the primary goal of the summones of parliament document in England, and based on what it had that give anxiety to English.

http://www.nationalarchives.gov.uk/education/resources/magna-carta/summons-to-the-parliament-1265/

Be sure to read the transcript.
Pay attention to this: "This document was sent out to the counties of England, asking men to come to Parliament who were not as high ranking as the great barons and bishops."

What do you think those who were "high ranking" thought about this invitation to those not as high ranking?

Would this invitation give anxiety to all the English people at the time? Some of the English people? Just a few??

What kind of anxiety?