Explanation:

First statement is incorrect while fourth statement is correct. It is true that Special Officer for Linguistic Minorities to be appointed by the President of India. But Constitution does not specify the qualifications, tenure, salaries and allowances, service conditions and procedure for removal of the Special Officer for Linguistic Minorities.
Second statement is correct. It would be the duty of the Special Officer to investigate all matters relating to the safeguards provided for linguistic minorities under the Constitution. He would report to the President upon those matters at such intervals as the President may direct. The President should place all such reports before each House of Parliament and send to the governments of the states concerned.
Third statement is correct. At the Central level, the Commissioner falls under the Ministry of Minority Affairs. Hence, he submits the annual reports or other reports to the President through the Union Minority Affairs Minister.