Answer:
Laughter decreases stress hormones and increases immune cells, therefore, improving your resistance to diseases. Laughter triggers the release of endorphins. Endorphins is the body's natural feel-good chemicals. Endorphins promote an overall sense of well-being and can even temporarily relieve pain
Explanation:
There is one adverb in this sentence - "often", but it's not part of the advern phrase.
The whole adverb phrase actually does not contain an adverb - it's "Before automobiles came on the scene" - answer a) . It's an adverb phrase because it answers the question of "when"
Noble would be the answer
G is the answer I think hope that helps
