Step 1: Understanding the Concept:
Global edible oil production is dominated by primary oilseed crops processed worldwide for cooking oil, industrial feedstocks, and high-protein meal.
Step 2: Detailed Explanation:
Globally, Soybean (Glycine max) and Oil Palm are the two dominant vegetable oil sources in the world.
Among annual arable oilseed crops, Soybean accounts for over 50% of total global oilseed production and is the leading annual vegetable oil source globally, followed by Rapeseed/Mustard and Sunflower.
Step 3: Final Answer:
Therefore, Soybean is a leading vegetable oil source globally, corresponding to option (C).