The correct answer of the given question above would be the last option: PERFORMING AN INVESTIGATION. Since Chou is curious about the effects of magnets on growing plants, she decided to compare it and do a little comparison of the effects by doing an experiment. And performing an investigation is the scientific practice the Chou did.
By creating the mayflower compact
They are limited if they harm the public interest. In other words you have a right to free speech but you can't yell fire in a crowded place because it would be against the public's best interest to cause a panic.
Another example: You have the right to religious freedom as long as you aren't forcing people to believe your religion.
The limits end where another person's limits start.
The colonists at Lexington and Concord were alerted that the British were going to confiscate the colonists weapons when they arrived so they fought due to the fear of the British gaining leverage on the colonies by disarming them