We need to match each word with its antonym.
\[
\text{Potent}
\]
means powerful or strong.
The opposite of potent is:
\[
\text{Weak}.
\]
So:
\[
A-III.
\]
\[
\text{Meagre}
\]
means very small, insufficient, or lacking in quantity.
The opposite of meagre is:
\[
\text{Surplus}.
\]
So:
\[
B-IV.
\]
\[
\text{Chronic}
\]
means lasting for a long time.
The opposite of chronic is:
\[
\text{Temporary}.
\]
So:
\[
C-I.
\]
\[
\text{Evident}
\]
means clear, obvious, or visible.
The opposite of evident is:
\[
\text{Hidden}.
\]
So:
\[
D-II.
\]
Therefore, the correct matching is:
\[
A-III,\quad B-IV,\quad C-I,\quad D-II.
\]