Which of the following sentences does not use capitalization correctly?

a dad said he would pick us up.
b planet earth is in trouble these days.
c i find this english course challenging.
d my mom is a great cook

faithful servants eumaeus and philaetius:

his ragged vest then drawn aside disclosed the sign conspicuous, and the scar exposed: eager they view'd, with joy they stood amazed with tearful eyes o'er all their master gazed:

these servants know ulysses by the scar he got when he was a child - so when he showed them the mark, they immediately knew this is truly their master and they hugged him, finally starting to believe his words.

to gain popularity at school, fitzgerald wrote plays for the school and cast himself as the star. he also joined one of the universitys most prestigious clubs.

answer: sure

explanation: i'd love to know everything but that burden is too much to bare.