It means a four-legged creature living on land. Land in this context means only the groundcover, meaning, trees are excluded. Breaking down the words to its origins, we get the Latin word "terra" from terrestrial and the Greek words "tetra" and "pous" from tetrapod. "Terra" means earth, "tetra" means four while "pous" means foot. Side by side we get earth-four-foot. To make more sense, it can be interpreted as 'four foot on the earth'.
The word exquisite does not mean any of these things, but for the sake of the quesiton let us say that the most correct answer is perfect, since it means <span>extremely beautiful and delicate</span>
In my opinion, the correct answer is <span>b. False. This kind of sentence invites for a further discussion, and would be appropriate in a job application letter, cover letter, or something like that. However, a refusal letter should explain the reasons for refusing something that are not debatable. It is basically the end of written correspondence, so there is no reason to contact anyone further. If you leave more room for contact, it would either mean that you aren't sure about your decision, or that you are expecting a different kind of offer (should that be the case, this is not a professional way to do it).</span>
