What did the Air Corps Act do for the Army Air Corps? How many days did Mitchell’s around-the-world trip take?
What did the Air Corps rename the B-299 once it bought 13 of them?

It took Mitchell around 299 times ! If I am wrong, I am sorry :(

Explanation:

the correct answer is d

monitor contract compliance and results of forestry activities to assure adherence to government regulations.  

plan and supervise forestry projects, such as determining the type, number and placement of trees to be planted, managing tree nurseries, thinning forest and monitoring growth of new seedlings.  

establish short- and long-term plans for management of forest lands and forest resources.  

determine methods of cutting and removing timber with minimum waste and environmental damage.  

supervise activities of other forestry workers.

by the way there is no video here.