Answer: I think the theme is is to be romantic, beautiful, etc...
Explanation:
A-affix
1. A has the suffix ical
B tic
.c has ment
D does not have a suffix
E has ence.
2. The answer is root because it is not affix, not suffix or prefix
so it is root.
3. A because the prefix auto
D - In
4. it is again not suffix or prefix, or postscript so affix.
