Concept:Christopher Marlowe's literary life refers to the period during which he wrote his major plays and poems.Explanation:Marlowe was born in 1564 and died in 1593.His notable literary career began around 1587 with the performance of his play Tamburlaine the Great.He continued writing until his death in 1593.So, his literary life lasted from 1587 to 1593.This gives 1593−1587=6 years.Answer:A. 6 years