I think the answer is infinitive.
Answer:
A) It is important to use credible sources in an academic research paper because your audience will expect you to have backed up your assertions with credible evidence. Using evidence that does not come from a credible source of information will not convince your reader that your claim is plausible or even correct.
B) When you create an Access database, you store your data in tables—subject-based lists that contain rows and columns. For instance, you can create a Contacts table to store a list of names, addresses, and telephone numbers, or a Products table to store information about products.
C) To cut to the chase, “key takeaway” refers to any learning point or even teaching moment from a real-life experience. It can also come from reading or observation, or attending a seminar or conference, or even from a small talk encounter.
Explanation:
18)My sister who lives in San Francisco<u><em>, </em></u> is a chemist!
19)My sister who is a doctor , lives in London!
....zzzozososos and so it connects
