This is just a random question

Do you approach challenging situations with humor ?

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

Ineed with this, i don’t know it’s display or protest

Which pair of words has similar denotation but different connotations?