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Difficulty: HardComparatives and Superlatives

Complete the sentence by filling in the blanks. Use the comparative form of the adjective 'extensive' to show a greater degree in the first blank, and the appropriate singular pronoun in the second blank to maintain a logical comparison.

Answer:Although the local museum boasts a diverse array of artifacts, its collection of ancient Roman coins is 【more extensive】 than 【that】 of the national treasury.

Answer

Although the local museum boasts a diverse array of artifacts, its collection of ancient Roman coins is more extensive than that of the national treasury.
The correct completion uses 'more extensive' to properly compare the two collections using the comparative degree of a multi-syllable adjective, and 'that' as a singular pronoun pointing back to 'collection' to make the comparison logical.

Step-by-Step Solution

1
Identify the two entities being compared.
The local museum's 'collection' is being compared to the 'national treasury'.
To ensure grammatical agreement and logical parity, we must verify what is being compared.
2
Formulate the correct comparative form of the adjective.
Since we are comparing exactly two collections, the comparative form 'more extensive' is required rather than the superlative 'most extensive'.
Comparative forms are used when comparing two entities, whereas superlatives are reserved for three or more.
3
Correct the illogical comparison structure.
Comparing a 'collection' directly to a 'treasury' (an institution) is illogical. Inserting the singular pronoun 'that' creates the parallel structure 'collection ... than that [collection] of the national treasury'.
Comparisons must compare like things (collection to collection, not collection to institution).

Key Concept

Logical comparison and comparative adjective forms. Comparisons must compare comparable things, and the comparative form must be used when exactly two things are being compared.
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Topics

Comparatives and Superlatives

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