Final answer:
John Dickinson's viewpoint can be best expressed by option c) British authorities have unjustly restricted what colonies can produce and trade.
Step-by-step explanation:
In his influential pamphlet, 'Letters from a Pennsylvania Farmer,' Dickinson argued that Britain had improperly limited the colonies' ability to produce and trade goods.
The letters from a Farmer in Pennsylvania is a series of essays written by the Pennsylvania lawyer and legislator John Dickinson (1732–1808) and published under the pseudonym "A Farmer" from 1767 to 1768. First serialized in newspapers, Dickinson's essays circulated widely, and were later published in a single volume.
And, the viewpoint of John Dickinson's can be best expressed by option c) British authorities have unjustly restricted what colonies can produce and trade.
He claimed that Parliament did not have the power to impose taxes on the colonies without their consent, leading him to declare that the colonists were being treated as slaves.