The best and most correct answer among the choices provided by your question is the fourth choice or letter D.
The most effective thesis sentence from the given choices is: <span>Valuable lessons are important in life.</span>
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A. If you need a basketball, you can borrow our's.
I'm not really sure, but I think that the correct answer would be the third option.
I hope this helps !
Please let me know if it is correct or not.