It happened that I went out that day. The italicized part is ______.

A. I shall take what measures
B. What measures shall I take
C. It is what measures I shall take
D. What measures I shall take

A. I send you my warmest congratulations on your success.
B. The President named Rice Secretary of the United States.
C. We found him an amiable companion on the tour.
D. The professor makes her his assistant.