Assertion (A) : The number of the Members of the Union Public Service Commission is prescribed in the Constitution of India. Reason (R) : The Union Public Service Commission was constituted under the provisions in the Constitution of India.

Assertion (A) is false because the Constitution of India does not prescribe the exact number of members for the Union Public Service Commission (UPSC). Instead, Article 318 empowers the President of India to determine the number of members and their conditions of service [t1]. While the Constitution provides for the appointment and composition in general terms under Article 316, it leaves the specific strength to executive discretion [t1][t6]. Reason (R) is true as the UPSC is an independent constitutional body directly created by Article 315 of the Constitution of India [c1][t4]. It evolved from the Federal Public Service Commission established under the Government of India Act, 1935, into its current constitutional form upon the commencement of the Republic [t1]. Since the assertion is incorrect regarding the prescription of member numbers, the correct option is 4.

Sources

1. [1] Indian Polity, M. Laxmikanth(7th ed.) > Chapter 44: Union Public Service Commission > CHAPTER 44 Union Public Service Commission > p. 423
2. [2] https://appsc.gov.in/Index/constprovi