Critical Reasoning (CR) | Re: Most of the year, the hermit thrush, a North American songbird, eats a

My ques
A causes B can be weaken by C causes B
C causes B ok

see the option C
what if
calorie reqd to catch insect = 200
calorie gained from eating = 400
net gain = 200.

calorie reqd to eat berry = 100
calorie gained = 200
net benifit= 100

since 200>100 we can not use it to prove that berries eating will be more calorific as compared to eating insects.

kindly clear this doubt.. thanks in advance.

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