Choose the word or set of words that best completes the following sentence.
As she began her public speech, Natasha was clearly __________ due to the anxiety of the situation, causing her to stumble over her words.
composed
flustered
haughty
useful
timid
Certain dinosaurs like the velociraptor were small and speedy, but others, like the brontosaurus, were enormous, slow, and __________.
lumbering
manageable
swift
efficient
harried