What adaptation of lumbricus are traits that evolved in response to its free-living terrestrial niche? what is the vent length and intestine length of female or male lumbricus

The lumbricus or earthworm has no eyes as it does require to see underground, in addition it has hairs on each of its segments in order to allow grip on the soil it has circular muscle throughout its body to in lateral movement and has no appendages or antennae and a streamlined body, the vent and intestine runs the entire length of the earthworm and can range from 25mm to 300mm

The answer is b. hope this !