This sentence has one independent clause
I believe that sentence 2 is the correct answer.
The ball, that was yellow and made of rubber, bounced down the road.
Our clause is : "that was yellow and made of rubber." This describes the features of the ball, which is the noun. Adjectives describes nouns therefore this sentence would be the correct answer!
I think it’s is c because they’d be encouraged and not let down because of that
