The statement that BEST describes the impact of the underlined alliteration in the third stanza, on page 1 is: It creates a smooth sound that reflects the gentle passage of time.
The alliteration in the third stanza can be seen in the repetition of the s sound. <em> </em>
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<em>"Hours, days, and years slide soft away,"</em>
The soft whisper of the 's' sound demonstrates the manner in which time gently passes by.
The poet was thus saying that anyone who can experience, health, peace of mind, and quiet as time gently passes by is blessed.
So, the gentle passage of time is illustrated in the alliteration of the 's' sound.
Learn more about alliteration here:
brainly.com/question/536028