Answer: Your Answer Is B. Weekly and Monthly
Explanation:
Huck seems like the type of character, based just from this snippet, to overexaggerate things, even something small. He also seems to be on the glass half empty side of life. Perhaps cocky and a bit overzealous, too, judging by the "I bet I do" phrase. Does that help?
The answer is B. Because, if the students had the flu, of course their absence was 'legitimate', which means 'acceptable', allowed. And 'aberration' means 'something unusual or unexpected", because they usually have perfect attendance, but now they missed a couple of classes.