Answer:
The participle in the sentence is "feeling."
Step-by-step explanation:
In the sentence "Feeling sick from the hamburger, Edith staggered to the bathroom," the word "feeling" is a present participle that functions as an adjective modifying the subject "Edith." It describes the state or condition that Edith was in as she staggered to the bathroom.
A participle is a verb form that can function as an adjective, noun, or part of a compound verb. Present participles are formed by adding "-ing" to the base form of the verb. In this sentence, "feeling" is a present participle of the verb "feel."