Which genre is typically in strophic form and normally concludes each verse with a refrain?

The English historian famous for writing 1776's The Decline and Fall of the Roman Empire was which of the following?

A. Samuel Johnson B. Edward Gibbon C. Georges Louis Leclerc D. Antoine Lavoisier

He wrote only four symphonies, but they established his position as one of the greatest composers in Western musical tradition. While he worked off and on for twenty years on his first symphony, the other three followed more quickly

A) Felix Mendelssohn B) Johannes Brahms C) Robert Schumann D) Hector Berlioz