Final answer:
The revision with correct apostrophe usage is 'You’ll enjoy your trip to Death Valley, but be careful you don’t get dehydrated.' Apostrophes show where letters are omitted in contractions, such as ’ll for will and ’t for not. Correct apostrophe use maintains the sentence's original meaning.
Step-by-step explanation:
The correct revision that uses apostrophes correctly to shorten words is:
You’ll enjoy your trip to Death Valley, but be careful you don’t get dehydrated.
In this sentence, ’ll is the contraction for “will” and ’t is the contraction for “not.” It is important to use apostrophes correctly to show where letters have been omitted in contractions. “You’ll” is the shortened form of “you will,” and “you don’t” is a contraction for “you do not.” These are correctly placed and represent the original sentence's intent without changing the meaning of any words.