The correct answer would be C and D because they talk about competition!
C: <span>Rivalries developed as women worked to break each other’s records, and some began to battle back and forth.
D:</span><span>Rivalries developed as women worked to break each other’s records, and some began to battle back and forth.</span>
The compound sentence would be choice A. Erin and Maria are going to the mall, and John is going to the movies. Hope this helps! ^_^
Being on time and organization so that you can be a reliable person