Question

which other detail explains why malú feels like she is in a very different place?
malús feeling
malú feels like she is on another planet.
detail
malú notices there are no lovebugs or spanish moss.
detail
malú pushes her foot harder against the sidewalk.
malú passes by mom on her skateboard.
malú comments that the sky looks less blue.
malú glances up at the trees that line the street.

Explanation:

This detail describes a distinct, visible environmental difference (the sky's appearance) that would contribute to Malú feeling like she is in an entirely different, unfamiliar place, matching the logic of the existing detail about missing local flora/fauna (lovebugs, Spanish moss). The other options do not describe a meaningful change to the environment that would create this "another planet" feeling.

Answer:

Malú comments that the sky looks less blue.