Under which section of Uttar Pradesh Municipalities Act is the Director of Local Bodies appointed?

Correct option is A

The correct answer is (a) Section 31-B
Explanation: . The Director of Local Bodies, Uttar Pradesh, is appointed by the State Government. . This appointment is made under the provisions of  Section 31-B of the Uttar Pradesh Municipalities Act, 1916. . Section 2(5A) of the Act also defines "Director" as the Director of Local Bodies appointed under Section 31-B. 
Information Booster: . The post of Director of Local Bodies was inserted into the Act by U.P. Act No. 41 of 1976. . This officer exercises powers of the State Government in addition to functions expressly assigned by the Act. . A corresponding provision also exists in the Uttar Pradesh Municipal Corporation Act, 1959, where the Director is defined as appointed under Section 5-A of that Act. 
Additional Knowledge: Section 21 (Option b) . Section 21 of the Uttar Pradesh Municipalities Act relates to the publication of the declaration of a street as a public street. In general legal contexts, Section 21 often relates to the definition of a "public servant" in the Indian Penal Code. 
Section 12 (Option c) . Section 12 and subsequent sections of the Act deal with the preparation of electoral rolls for Nagar Palika Parishads and Nagar Panchayats. 
Section 45-A (Option d) . Section 45-A is not a standard or widely cited section related to the Director of Local Bodies in the primary Act text snippets provided. The relevant section is 31-B.