The best way to punctuate the bolded portion of the quotation is the following:
C. them."-C.S. Lewis
This is the best way considering that the sentence ends on 'Lewis'. Periods always go inside quotations, as you can see from this brief description between different citing standards.
MLA: Commas and periods directly following quotations always go inside closing quotation marks. Question marks can vary depending if the question is part of the quote, then the punctuation mark goes inside the quotation marks. If the question is not part of the direct quote, it goes outside.
AP: All punctuation goes inside the closing quotation marks. This includes commas, periods, question marks and exclamation points.
Chicago: Periods and commas always go inside quotation marks. Question marks and exclamation points that are part of the original quote are included inside quotation marks.
Explanation:

FIVE TIPS TO HELP YOUR DENTAL RECEPTIONIST WHEN CALLING YOUR PATIENTS
- Sit up straight and smile before each call. ...
- Let patients speak without interruption or placing them on hold. ...
- Be well versed in practice FAQ's and always have a script handy. ...
- Probe for more information. ...
<h3>-XxItzAdiXx</h3>
Answer:
The last
Explanation:
I'm in 7th and I've done this previously in 6th
Answer:
the awnser is B the one you have clicked because as you can see run on senrences go through and they run on to a different topic just like B does
Explanation:
Answer:
the answer is b
it comes up again and again, with little variation and similarity to many other stories