Answer: One correct way to rewrite the sentence provided is writing "Susan will go, and I will stay".
Explanation: "Susan will go I will stay" is a run-on sentence because there is no punctuation mark separating the two independent clauses ("Susan will go" and "I will stay") that are part of this sentence. When two independent clauses are found one after the other in a sentence, they must be separated with a period or with a coordinating conjunction. Moreover, if a coordinating conjunction is included between these two clauses, a comma must be placed before this coordinating conjunction. In that way, writing "Susan will go, and I will stay" is a correct way to rewrite the sentence provided since there is a comma and a coordinating conjunction joining both clauses.