What is the correct superlative form of bad

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

What does a change in medium allow the audience to do?

This is a word with multiple meanings but spelled the same