Hi, D. is the answer...
A. tender...
ten- (next line) der
B. Prefix...
pre- .... fix
C. motherland
mother- ..... land
D. idea
id- ea.... (doesn't look right at all)
this is because you have to divide syllables and you have to at least two characters (not including hyphen) on the first line, and at least three on the second.
Hoped I helped!