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Difficulty: MediumCommas with Lists, Clauses, and Coordinate Adjectives

Consider the underlined portion in the sentence below:

While translating medieval manuscripts in the monastic archive, paleographers transcribed several intricate, ornate illuminations, cataloged rare marginalia, and restored fragile parchment leaves before submitting their final report.

Which of the following options represents the most grammatically correct punctuation for the underlined text?

  1. NO CHANGEAnswer
  2. B
    intricate ornate illuminations, cataloged rare marginalia and restored
  3. C
    intricate, ornate illuminations; cataloged rare marginalia, and restored
  4. D
    intricate, ornate illuminations, cataloged rare marginalia, and, restored

Answer

The option keeping the sentence unchanged ('NO CHANGE') is correct because a comma is necessary between coordinate adjectives that independently modify the same noun, and commas are required to separate three parallel predicate items in a series.
The original phrasing ('NO CHANGE') correctly places a comma between the coordinate adjectives 'intricate' and 'ornate' because both describe 'illuminations' independently. Additionally, it uses commas correctly to separate the three parallel verb phrases in the series ('transcribed...', 'cataloged...', and 'restored...').

Step-by-Step Solution

1
Analyze the relationship between the consecutive adjectives 'intricate' and 'ornate'.
Both adjectives independently modify 'illuminations' (testing 'intricate and ornate' makes sense), meaning they are coordinate adjectives requiring a separating comma.
Coordinate adjectives require a comma between them.
2
Identify the structure of the list in the main predicate.
The sentence contains three parallel verb phrases: (1) 'transcribed several intricate, ornate illuminations', (2) 'cataloged rare marginalia', and (3) 'restored fragile parchment leaves'.
Items in a series of three or more must be separated by commas.
3
Evaluate the punctuation surrounding the coordinating conjunction 'and'.
A serial comma precedes 'and', and no comma follows 'and'.
Standard ACT conventions require a serial (Oxford) comma before the conjunction in a list and forbid placing an unnecessary comma immediately after a coordinating conjunction.

Key Concept

Commas with Coordinate Adjectives and Parallel Items in a List
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Topics

Commas with Lists, Clauses, and Coordinate Adjectives

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