Which additional word in the sentence should be capitalized?

the charleston, an american ballroom dance, originated in 1923.

a.
dance

b.
american

c.
ballroom

d.
originated

the patient with shortness of breath is ready for you, doctor.

a.
shortness

b.
breath

c.
patient

d.
doctor

which additional word in the sentence should be capitalized?

the book "the last of the mohicans" was the source for a movie of the same name starring daniel day lewis, wes studi, and madeleine stowe.

a.
source

b.
movie

c.
book

d.
last