Choose the best option to replace the underlined part to improve the given sentence. If no substitution is required, select 'No substitution.'
She is skilled at playing both the piano and the violin.
Show answer & explanation
Correct answer: D
Explanation
Correct Answer: No substitution
Explanation
• The adjective skilled is correctly followed by the preposition at (or in) to indicate proficiency or expertise in doing an activity.
• Common prepositional collocation: skilled at + verb-ing / noun.
• Prepositions such as for, to, or on are grammatically incorrect in this context.
• Since the sentence already uses the correct preposition at, no improvement is needed.
Example: He is highly skilled at solving complex puzzles.