The following sentence has been divided into parts. One of them contains an error.

Select the part that contains the error from the given options.

Mr. Vinu / has never / slept in / a igloo.

The correct option containing the error is "a igloo".

Logical Step-by-Step Breakdown:
1. Analyze the Sentence Structure: The sentence is split into four parts: "Mr. Vinu", "has never", "slept in", and "a igloo". We need to check each part for grammatical correctness.
2. Check the Subject and Verb Agreement: "Mr. Vinu" is a singular subject, which correctly takes the singular auxiliary verb "has" followed by the adverb "never" and the past participle verb "slept". This part of the sentence is grammatically correct.
3. Check the Article Usage: Look at the phrase "a igloo". The word "igloo" begins with the vowel letter 'i' and is pronounced with a vowel sound (/ɪ/).
4. Apply the Rule for Indefinite Articles: In English grammar, we use the indefinite article "a" before words that start with a consonant sound (e.g., a house, a car), and "an" before words that start with a vowel sound (e.g., an apple, an hour).
5. Identify the Correction: Because "igloo" begins with a vowel sound, it must be preceded by "an" rather than "a". Therefore, "a igloo" is incorrect and should be written as "an igloo".