I think the answer is B. Commensalism. The cows are unaffected by the birds taking advantage of their stirring up the ground, while the birds benefit. Thus, this is not parasitism, while one organism benefits while the other is harmed, or preparation, where one organism kills the other for food, or mutualism, where both organisms benefit.
The answer is B. Commensalism
Hope this helps!
Commensalism relationship exists between the birds and the cattle.
There are five main symbiotic relationships:
Hence, B option is correct.
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