The following passage contains two blanks. Choose the option that can make the passage meaningful.
How have other paleontologists reacted to the publication of this paper? There is widespread _______ that the authors have done careful, detailed work, and that their conclusions deserve to be taken seriously. However, there are still some objections being voiced about the quality of the fossil evidence, especially as it _______ to the earliest dinosaurs, and most scientists agree that additional, confirming evidence will be needed before books on dinosaur evolution have to be rewritten. In any case, it will take years for this research to filter out to the general public, so there's no need to worry just yet about how to pronounced "ornithoscelidae."
The context suggests that the first blank should contain a noun that means 'agreement', as the next sentence uses the opposite noun 'objection', with the contrasting adverb 'however'.
Only 'accord' or 'consensus' can fit the first blank to make the sentence meaningful.
Demur means dissent.
The second blank should contain a verb that means 'related to'.
This is only given by 'pertains to'.
Note that, with the verb 'concerns', there would be no need to use the preposition 'to'.
Therefore, the correct answer is option 4.