From which act is the extract taken?

(For our Students)
English Language - Literature

The Cockcrow
The Dilemma of a Ghost
Read the following extract and answer the questions on it:

"They will ask me where I was when such things were happening.
O Mighty God!
Even when the unmentionable came and carried off the children of the house in shoals like fish,
Nana Mom kept his feet steadfast on the ground And refused to let any of his nephews
Take a wife from a doubtful stock."

From which Act is the extract above taken?