The correct answer is (c) 28-30%.
Soybean oil is a vegetable oil extracted from the soybean, a legume. It is one of the most widely consumed vegetable oils in the world, and is used in a variety of food products, including cooking oils, salad dressings, and margarine. Soybean oil is also used in non-food products, such as biodiesel fuel and lubricants.
The oil content of soybean grain varies depending on the variety of soybean, the growing conditions, and the harvesting method. The average oil content of soybean grain is 28-30%.
Option (a) is incorrect because the oil content of soybean grain is typically higher than 10-12%.
Option (b) is incorrect because the oil content of soybean grain is typically lower than 18-20%.
Option (d) is incorrect because the oil content of soybean grain is typically lower than 38-40%.