Answer:
C). Facility.
Step-by-step explanation:
In the given question, the word that would best fill the blank as per the context of the question would be 'facility' as it not only accomplishes the meaning of the sentence adequately but also comprehends the essence of the sentence. The given blank could only be filled by a noun(reflected by option C) and the other options either exemplify an adjective, adverb, or verb. Thus, option B 'facility'(noun) that implies 'physical means or contrivances' and giving the meaning:
'The new boos changed all the procedures in the 'facility'(contrivance or physical means) to speed up the fulfillment of orders'.
Hence, option B best advances the meaning of the sentence.