The question asks which language is not specified in the Eighth schedule of the Indian Constitution. The Eighth schedule of the Indian Constitution lists the recognized languages of India.
Option 1: Urdu - This language is mentioned in the Eighth schedule, so it is not the correct answer.
Option 2: English - This option is the correct answer because English is not specified in the Eighth schedule of the Indian Constitution. However, it is still widely used for official purposes.
Option 3: Sindhi - Sindhi is mentioned in the Eighth schedule, so it is not the correct answer.
Option 4: Sanskrit - Sanskrit is mentioned in the Eighth schedule, so it is not the correct answer.
Therefore, the correct answer is option 2, English.