Correct Answer - Option 1 : dLg
The logic is:
1. dLg → Three consonants
2. Keh → One vowel and two consonants
3. aGd → One vowel and two consonants
4. Qmo → One vowel and two consonants
All options except 'dLg' are made up of one vowel and two consonants, while 'dLg' is made up of three consonanats.
Hence, ‘dLg’ is the odd one out.