Vowel Order Analysis

The question asks to identify the word where the vowels appear in alphabetical order (A, E, I, O, U). Let's examine the vowels in each option:

Option 1: DILATE

• Vowels present: I, A, E
• Order found: I, A, E
• Alphabetical order of these vowels: A, E, I
• Result: The vowels are not in alphabetical order.

Option 2: FACILE

• Vowels present: A, I, E
• Order found: A, I, E
• Alphabetical order of these vowels: A, E, I
• Result: The vowels are not in alphabetical order.

Option 3: REPAIR

• Vowels present: E, A, I
• Order found: E, A, I
• Alphabetical order of these vowels: A, E, I
• Result: The vowels are not in alphabetical order.

Option 4: MEDICO

• Vowels present: E, I, O
• Order found: E, I, O
• Alphabetical order of these vowels: E, I, O
• Result: The vowels are in correct alphabetical order.

Therefore, the word 'MEDICO' is the correct choice as its vowels follow the alphabetical sequence.