Mount Everest is not a person, so whom and who cannot be used.
The phrase that the blank spot is in needs a transition word to flow correctly. 'that' does not flow, as it would make this phrase grammatically incorrect.
The answer is B. which.
I think the correct answer to the question being ask is A.
Answer:
i think its because if one of the models are broken or wrong they have a back up or just try to get better info then the others or just to get extra data.
Explanation:
