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Which of the following sentences has no punctuation, spelling, or grammar mistakes?
Without them you will find it harder to push up on the edges of the cliff, and you could possibly sustain an injury from not wearing the correct attire.
Without them, you will find it harder to push up on the edges of the cliff and you could possibly sustain an injury from not wearing the correct attire.
Without them you will find it harder to push up on the edges of the cliff and you could possibly sustain an injury from not wearing the correct attire.
Without them, you will find it harder to push up on the edges of the cliff, and you could possibly sustain an injury from not wearing the correct attire.