The person on top got the correct answer I think
C they want to keep the air cleaner so they will make it more efficient.
That is false considering everything that has been happening
Answer:
It was the result of a "safety trial" gone terribly amiss, compounded by incompetence, and made even worse by misinformation and secrecy. The accident could have been prevented completely, and its consequences could have been mitigated, with effective training, management and regulatory oversight
