Which choice contains a broad pronoun reference?

we need rain. this would clear the dust from the sky and end the drought.
we need rain to clear the dust from the sky and end the drought.
we need rain that would clear the dust from the sky and end the drought.
to clear dust from the sky and end the drought, we need rain.

Read the sample student claim. if university education was made free for everyone, i would be thrilled because more people would go to college and pursue successful careers. why is this not an effective claim? check all that apply. it is a topic with two or more viewpoints. it does not contain the writer’s opinion. it is simply a personal preference or feeling. it does not present supporting evidence. it cannot be supported with logical reasons.