Mood is how the reader feels upon reading this (or at least the author's intent). The reader here would feel FRUSTRATED, REFLECTIVE, HOPEFUL.
In England, a group called Parliament meets to make the laws in the Palace of Westminster in London
Dramatic Irony: The characters think one thing to be true, but the audience knows something else to be true
The reader already knows that all these irregular events are set up by Abigail. Though Danforth does not know this so he sides with her.
Answer:
laughter may have healing properties
Explanation:
"this discovery" as stated in the text is actually referring to "laughter may have healing properties".
From the passage, we discover that it was stated that the doctors reveal that laughter may have healing properties.
Also, the last line of the text revealed that "the discovery" is having a phenomenal influence on health care. It is only laughter that can bring something phenomenal among the other options given.
Something phenomenal is referring to something remarkable. Therefore, laughter is what can make bring a phenomenal influence on health care.