Thanks for your comment.
The “and” for the semicolon list is the one in the answer choices. The list items are:
* ensuring that materials and products are available for production and delivery;
* maintaining the lowest possible level of inventory;
* planning manufacturing activities, delivery schedules and purchasing activities.
The sentence came from a website explaining MRP. I usually select the sentences for these based on documents I find online, so that they have a bearing on the kinds of things people are writing and the related questions they might have.]]>
Question: Where’s the ‘and’ for the semicolon list? I do not accept the argument that the single ‘and’ at the end of the list spans both the comma-delimited and the semicolon-delimited list. I find your answer incomplete because of the failure to provide the ‘and’ for the semicolon list.
Personally, I find the sentence as presented extremely awkward because the sub-list destroys any sense of a parallel structure – the three parts of the semicolon list are NOT equally built.]]>