I am not sure about which is the correct preposition that follows effectiveness.
The effectiveness of marketing strategies in/at attracting customers.
The effectiveness of marketing strategies in/at attracting customers. I'd use 'in', but I see nothing intrinsically wrong with 'at' or even 'for'.
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anonymousI am not sure about which is the correct preposition that follows effectiveness.The effectiveness of marketing strategies in/at attracting customers.
I'd use 'in', but I see nothing intrinsically wrong with 'at' or even 'for'.