The correct answer is (B) Tehri.
The "Beej-Bachao Andolan" (Save the Seeds Movement) was started by farmers in the Tehri region of Uttarakhand.
This fact is not directly covered in the source passages provided, but it is a well-known point from the NCERT Class 10 Geography Chapter 4 (Agriculture). The Beej-Bachao Andolan was a grassroots movement by farmers in Tehri, Uttarakhand, aimed at preserving traditional/indigenous seed varieties without the use of chemical fertilisers. Examiners expect students to recall this specific location. Do not confuse it with the Chipko Movement (associated with Chamoli/Uttarakhand broadly) or the Bhoodan-Gramdan Movement.