We need to match each word with its appropriate meaning.
\[
\text{Chivalrous}
\]
means brave, courteous, honorable, or gallant.
So:
\[
A-III.
\]
\[
\text{Eternal}
\]
means everlasting or perpetual.
So:
\[
B-I.
\]
\[
\text{Dormant}
\]
means inactive, sleeping, or not active for some time.
So:
\[
C-II.
\]
\[
\text{Irreverence}
\]
means lack of respect or disrespect.
So:
\[
D-IV.
\]
Therefore, the correct matching is:
\[
A-III,\quad B-I,\quad C-II,\quad D-IV.
\]
Hence, the correct answer is option (C).