50. Why can commercial drone users be free from the regulation of drone law?
(A) There is a complete ban for the use of commercial drone.
(B) The commercial drone rules have not finalized.
(C) The commercial drone users operate the drone with extensive experience.
(D) The exemption is helpful to the development of drone businesses.

However, at present the drone law is applied to casual drone user who flies for fun. Commercially drone users for aerial photography, scientific purposes, search-and-rescue operations and industrial applications are exempted by the FAA to deploy drones in their business. The exemption process still requires pilots to demonstrate they plan to use their drones in a safe guideline provided by the FAA. The commercial use of drones is currently subject to regulatory scrutiny at both the federal and state levels.

apply應用  aerial航空的  exempt豁免  deploy有效利用

 regulatory監管的  scrutiny監督 subject主題

(A) There is a complete ban(禁止) for the use of commercial drone. 完全禁止商業用的無人駕駛機。
(B) The commercial drone rules have not finalized(完成).有關商業用無人駕駛機的規則尚未完成。 
(C) The commercial drone users operate(操作) the drone with extensive(廣泛的) experience. 
(D) The exemption is helpful to the development of drone businesses.這樣的豁免有助於無人駕駛機的商業發展。    

更正樓上,應為第三段開頭~