Which words in the sentence are the complete noun clause?

during the car ride, my hope is that i'll sleep.

a.
my hope is

b.
during the car ride

c.
that i'll sleep

d.
is that

my answer is c but i'm not to sure about it, : )

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,

the: determiner

storm: noun

remains: verb

a: determiner

threat: noun

to: preposition

the: determiner

coastal: adjective

village: noun