In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The Publications Division (PD), one of the leading publishing houses in the country and the largest in the public sector, functions (1)________ the Ministry of Information and Broadcasting. It attempts to promote National Integration by (2)________ information and creating awareness about the various activities, regions, people and the (3)________ cultures and beliefs of the Nation. The Division publishes and sells books at affordable prices through its outlets in important cities and also (4)________ agents. It also participates in exhibitions and books fairs to promote the sale of books and journals. Till date, 7,600 titles (5)________ published, of which 1,500 are live today. Besides books, the Publication Division has also brought out 21 journals about various issues of national and social significance.

Select the most appropriate option to fill in blank no. 4.

1. A
   through
2. B
   as
3. C
   about
4. D
   in