Endometrial ablation of cervical polyps

What is the name of the organization charged by Congress to investigate every civil aviation accident in the United States and significant accidents in the other modes of transportation?

A) Federal Aviation Administration B) National Highway and Traffic Safety Administration C) Commission on Accreditation of Air Medical Services D) National Transportation Safety Board

What is a simple, relatively inexpensive alternative to fire-resistive glass?

A. Glass blocks B. Fire-rated walls C. Higher-rated doors and windows D. Automatic sprinklers discharging on glass surface