[Bekah]

Is it because the C-H bond is nonpolar?

[enahs]

The C-H bond is very slightly polar, but over-all hydrocarbons are typically non-polar.

[Bekah]

I need to know the best answer to this question. My choices are :

They are hydrophilic
The C-H bond is nonpolar
The C-H bond is polar
They are large molecules
They are lighter than water

So its actually because the C-H bond is polar?

[Sev]

Are they hydrophilic? I need to know why they are insoluble

hydrocarbons are hydrophobic (lipophillic).

[Bekah]

lol...yes, but that is not one of my choices 

[Sev]

lol...yes, but that is not one of my choices 

You edited your post.  answer: nonpolar

[Bekah]

yes, I realized they were hydrophobic right after I wrote that. I get phobic and phillic confused for some reason.
Thanks

[enahs]

You are correct that the best answer of those choices is that the C-H is non-polar. It is technically wrong though. There are lots of molecules with polar-bonds that over-all are non-polar, and vice-versa.