Sheela was asked to write about an animal by her teacher. Here is what she wrote.

"On a rainy day I saw a number of crawling worm-like creatures on my lawn. They were brown. I could not see any legs. Their bodies were divided into rings. I could not even make out the head from the tail."

The options are:
Snail
Millipede
Centipede
Eartworm
Options ended
Please give explanation ​