Concept:
The Eighth Schedule of the Indian Constitution lists the official languages of the Republic of India. Originally, there were 14 languages, but several amendments have increased this number over time.
Step 1: Evaluating Assertion A.
Currently, the Eighth Schedule contains exactly 22 languages. This is a factual constitutional reality. Thus, Assertion A is correct.
Step 2: Evaluating Reason R.
The 92nd Constitutional Amendment Act of 2003 added four languages: Bodo, Dogri, Maithili, and Santhali (often remembered by the mnemonic BDM-S). Prior to this amendment, there were 18 languages. Adding these four brought the total to 22. Thus, Reason R is correct.
Step 3: Analyzing the Connection.
The reason *why* the total count is now 22 is precisely because the 92nd Amendment added the final four languages to the previous list. Therefore, R is the correct explanation of A.