Which is the most widely spoken language in Pakistan?

Which is the most widely spoken language in Pakistan?

پاکستان میں سب سے زیادہ بولی جانے والی زبان کونسی ہے؟
Explanation

The percentage of Punjabi-speaking people in Pakistan is 39%.

List of other Languages:

Sindhi speaking in Pakistan15%

Pashto speaking in Pakistan: 18%

Urdu in speaking Pakistan8%

Balochi speaking in Pakistan: 3%