Step 1: Analyze the first blank.
The sentence begins with:
\[
\text{The author has __________ his composition...}
\]
The word should mean “improved, perfected, or polished.” Both
refined and
polished are appropriate, but “refined” better conveys the nuance of careful improvement and sophistication, fitting a literary context.
Step 2: Analyze the second blank.
The phrase is:
\[
\text{...to the best of his __________;}
\]
Here, the blank requires a word signifying a personal talent or intellectual ability. Among the options,
ingenuity (cleverness, originality, inventiveness) is the best fit, as it highlights the author’s creative ability.
Step 3: Analyze the third blank.
The clause is:
\[
\text{...yet listen to it with a sympathetic __________...}
\]
Here, the quality required is one that emphasizes compassion or feeling. A “sympathetic
heart” makes sense, since judgment tempered with empathy and compassion is being requested.
Step 4: Analyze the fourth blank.
The phrase is:
\[
\text{...O __________ souls, and judge it.}
\]
The word must denote virtuous or morally upright individuals.
Righteous souls matches perfectly, implying fair and just judges.
Step 5: Verify coherence.
Final sentence:
\[
\text{The author has refined his composition to the best of his ingenuity; yet listen to it with a sympathetic heart, O righteous souls, and judge it.}
\]
This sentence is logically and grammatically consistent.
\[
\boxed{\text{refined, ingenuity, heart, righteous}}
\]