Which of the following presidential powers did lincoln use to ensure control over washington dc

D.Suspending habeas corpus

Explanation:

Assuming this is the full question

Suspending habeas corpus, since Lincon was worried about losing a key slaveholding state to the Confederacy. Which would make capturing the U.S Capital (Washington D.C) possible if the slaveholding state went with the Confederacy.

answer; i believe the correct answer is (favorable balance);