Read this excerpt from Narrative of the Life of Frederick Douglass. The most I had to do was to drive up the cows at evening, keep the fowls out of the garden, keep the front yard clean, and run of errands for my old master's daughter, Mrs. Lucretia Auld. The most of my leisure time I spent in helping Master Daniel Lloyd in finding his birds, after he had shot them.

What words from the excerpt provide evidence that the author was enslaved?

a. front yard
b. run of errands
c. old master
d. leisure time