Descriptive essay for a memorable birthday

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

According to the study, a is when you string one quote after another in an essay without connecting them

How can we make the world a better place, specifically towards discriminated people (lgbtq+ community, people of color, people with disabilities etc.) how can we make them change their view on people they call "different"? how can we get people to love one another despite how they look or who they love or where they are from? 2-3 paragraphs ! (ᵔᴥᵔ)