Yes because if not it would just be one long sentence.
Answer:
about 2 - 4 hours is alright
Explanation:
up to 6 hours you will feel pain in your eyes
<span>c.Poor Richard’s, which was published once a year, was a collection of miscellaneous information.
Grammatically, sentences A and B are incorrect. In sentence A the "and" makes the sentence incorrect. In sentence B "a collection of miscellaneous information" should be set off with commas but there's only a beginning comma. Also the sentence is missing a helping verb. C is the only one that is grammatically correct.
</span>