Select 3 reasons or incidences that swayed public opinion to support independence.
King George III issued a decree calling the colonists "ungrateful pigs."
The British Navy attacked and occupied New York City.
The pamphlet Common Sense by Thomas Paine challenged the authority of the British
government and monarchy.
John and Samuel Adams visited every large colonial city on a tour to raise support.
The Continental Army had military successes.
The British closed American ports, reduced trade, and cost the colonists their livelihood

The correct answers are:

The British Navy attacked and occupied New York City.

Thomas Paine challenged the authority of the British  government and monarchy.

The British closed American ports, reduced trade, and cost the colonists their livelihood.

Explanation:

First option is not true, as King George III never issued calling with such attributed to colonists, that could enrage them additionally.

Second option is correct as New York was under the siege of Britain at the beginning of the war, and the famous New jersey campaign was one of the most important battles in the first part of the war.

Third option is correct, because Payne's pamphlet was distributed throughout the country and was widely accepted.

Fourth option is wrong as they had diplomatic missions during that period, especially John Adams.

Fifth option is wrong as at the beginning of the war British army had more success.

Sixth option is correct, as this totally enraged colonists.