Answer:
The secrets of life is honesty, It is hard to live by the rules of honesty at times though.
Explanation:
An independent clause is a clause that can stand on its own if The comma is taken away ( if the comma is taken away, it will still make sense).
So if we take away the seond line
The secret of life is honesty
is a full sentence without a comma
and
It is hard to live by the rules of honesty at times though
is a full sentence also without a comma
The answer is A. He seems, however, to have recovered from his fright. While it should have a semi-colon instead of a comma before the "however", it is the only one that is correct. C. needs a comma after "I hope". D. does not use commas but it should have a comma after "rate". B. does not require a comma after "in".