I understood it wasn't D because it only talked about whales and there are other marine deep diving mammals that the ichthyosaur could have be similar to so I ruled it out immediately.

To me B made the most sense because the conclusion was that it has an advantage to home owners and B does not support that

In my mind, A is incorrect because it is talking about before 1953 and we are talking about things that have happened since 1953. is this correct to assume?

I just don't understand. How come if we can't assume that most coffee houses are well designed can we then assume that any well designed coffee house or restaurant has a spacious interior. Isn't that pretty much the same idea?