The correct answer is D. quality control.
Quality control is of utmost importance when it comes to providing customers with products or services. You need to check whether that product is ready and without faults before you publish it and reveal it to the public. This is done so as to avoid your customers being unsatisfied with the product/services.
The answer is (a)
The possessive adjective 'your' is used to modify the noun 'company'
Answer:
He built hotels on the island to attract more tourists to the falls.
Porter wants to preserve the beauty of the island.
Explanation: