Sentence Correction (SC) | The usual course of events when nature comes unhinged

The usual course of events when nature comes unhinged – as it did in the 2017 wildfires of California – isthat researchers and officials look back in time, try to understand what happened, and they assess and address the damage done .

(A) that researchers and officials look back in time, try to understand what happened, and they assess and address the damage done

(B) that researchers and officials look back in time, try to understand what happened, assessing and addressing the damage done

(C)
...

---