What is the purpose of a rhyming couplet?

Which sentence has an adjective clause? a.mike rode his bike on mountain trails because he found them challenging.b.gary donated to charity whenever he could.c.liz,who could always make people laugh,was loved by the whole block.d.ever since adam was a little boy,he had his father in the fields

Acontainer hold 4 gallons of lemonade.a large lemonade contains 16 ounces. how many large lemonades could the restaruant sell before they run out of lemonade?

Which two pieces of evidence support the idea that coal is underutilized? this was on study island about coal