Answer:
extemporaneous is the answer of given question .
The indefinite word in this sentence is "all'' because it is formed from a indefinite pronoun therefore it is a indefinite adjective.
I believe the answer is b.
Answer:
For years, Martin Luther King Jr. and poet Langston Hughes maintained a friendship, exchanging letters and favors and even traveling to Nigeria together in 1960. In 1956, King recited Hughes' poem “Mother to Son” from the pulpit to honor his wife Coretta, who was celebrating her first Mother's Day.
Explanation: