Identify the sentence that correctly uses the indefinite article.

Correct option is C

The correct sentence is (c) "She is an Indian artist married to a European engineer."

• • The indefinite article "an" is used before words that start with a vowel sound, such as "Indian" (which starts with a vowel sound 'I').
  • The article "a" is used before words that start with a consonant sound, such as "European" (which, despite starting with the letter 'E', has a consonant sound 'Yoo').

Why other options are incorrect:

• (a): "a Indian" is incorrect because "Indian" starts with a vowel sound and should have "an" before it.
• (b): "an European" is incorrect because "European" starts with a consonant sound, so "a" should be used.
• (d): "a Indian" is incorrect for the same reason as option A.