Tone indicates the writer's attitude. Often an author's tone is described by adjectives, such as: cynical , depressed , sympathetic , cheerful , outraged , positive , angry , sarcastic , prayerful , ironic , solemn , vindictive , intense , excited.
In this sentence, "which lasted two hours" is an adjective clause because it describes the school play by telling how long it lasted. Also, adjective clauses often start with words such as "who", "that", "which", or "when", along with others.
Answer:
A
Explanation:
Because the entire article speaks about the evolution of drinking utensils.
I hope this help!!