Option 1 is incorrect. Though finance is an important consideration for starting an industry, it is not a locational factor. Locational factors are related to the physical location of the industry.

Option 2 is incorrect. While availability of skilled workers, availability of raw materials, and infrastructure are indeed locational factors to consider, feasibility study is not directly related to the choice of location.

Option 4 is incorrect. Although all of the factors mentioned (finance, availability of skilled workers, availability of raw materials, infrastructure, and feasibility study) may be important considerations in starting an industry, only option 3 correctly identifies the locational factors.

The correct answer is option 3. Locational factors to consider for choosing a location for starting an industry are availability of raw materials and infrastructure. Availability of skilled workers is also important as it affects the productivity and efficiency of the industry. However, finance and feasibility study are not locational factors, but rather general considerations for starting any industry.