The chairperson of the seventh pay commission is:

The correct option is Justice A.K. Mathur.

Step-by-step Explanation:

1. The Seventh Central Pay Commission (7th CPC) was constituted by the Government of India in February 2014 to revise the remuneration structure of central government employees.

2. Former Supreme Court judge, Justice Ashok Kumar Mathur (A.K. Mathur), was appointed as the Chairperson of the Seventh Pay Commission.

3. The commission submitted its detailed report to the Finance Ministry in November 2015, which subsequently formed the base for updated salary structures, allowances, and pensions for central government personnel.