It is independent because it expresses a complete tought.
Answer:
A
Explanation:
Because the entire article speaks about the evolution of drinking utensils.
I hope this help!!
<span>The perfect form is the verb tense used to indicate a completed, or "perfected," action or condition. Verbs can appear in any one of three perfect tenses: presentperfect, past perfect, and future perfect. Verbs in the perfect form use a form of "have" or "had" + the past participle.</span>
