D. all of the above because when you are developing a customer-centric culture, there are typically only positive effects to that. all of the answers given there are positive effects, so it should be D.
A green leafy vegetable that contains calcium is kale. And multiple others are Broccoli, Brussels sprouts, collards which are some well known ones.
D . You never need to apologize by not drinking
It means that there is no more of something it had basically disappeared
