Does esterification require reactants to be present in the same plane?
The two commenters are collectively correct. But to clarify and augment their answers I would say that structure (d) cannot be correct because it is missing 2 carbon atoms relative to (c), and if you tried to cyclize (c) by forming esters, the result would be highly strained. Try making a molecular model of it and see how it looks.

Below is the product you would get if (c) cyclized. What is the difference between this product and (d)?