While revising, the error that should be correct is the run-on sentence.
A! DDT is sprayed all over the county
Your correct, It is B
Good Luck!
B) to show how a war tactic in literature became an internationally recognizable symbol
1. When the sun rises, the blue birds are singing, playing, and flying
2. After hibernating, the bear cubs emerging from their dens, playing with a stick, and looking for food.
3. The gardeners and I watering the daisies, tending to the roses, and trimming the trees.
4. The student brilliantly, cleverly, and believing when delivering his speech.
5. There are making thins I need to do today, like going the store, going to the gas station, and getting a haircut.
BTW i tried my best although i have never done anything like this so some may possibly be incorrect though some may right.