Answer:
The response that most accurately explains how the author helps the reader understand the full meaning of the phrase "pursuit of happiness" is, He provides historical context by explaining that happiness was regarded as one’s birthright and should be protected from others who may impinge upon it
Step-by-step explanation:
From the passage, the author tries to describe what happiness means and how fundamental happiness is to everyone.
He uses historical context to explain the importance of happiness and how happiness should be protected from others that may want to make one unhappy.