Option 1 states that tropical rainforests are the only source of "lac". This statement is incorrect. While tropical rainforests are indeed one of the sources of "lac", it is not the only source. "Lac" is a resinous substance that is secreted by insects, specifically the lac insects. These insects are found in various regions around the world, including India, Southeast Asia, and parts of Africa.
Option 2 states that India is the largest producer of "lac" in the world. This statement is correct. India has a long history of lac cultivation and production, and it is indeed the largest producer of "lac" globally.
Option 3 states that "lac" is used in the manufacture of printing ink, pharmaceuticals, and dyes. This statement is also correct. "Lac" has various industrial uses and is commonly used in the production of these products.
In conclusion, option 2 is the correct answer as it states that statement 2 (India is the largest producer of "lac" in the world) and statement 3 (lac is used in the manufacture of printing ink, pharmaceuticals, and dyes) are both correct.