Question

correct the text by inserting one comma. unlike most species of snakes anacondas are ovoviviparous, which means that they give birth to live young.

Explanation:

A comma is needed to separate the introductory phrase "Unlike most species of snakes" from the main - clause "anacondas are ovoviviparous".

Answer:

Unlike most species of snakes, anacondas are ovoviviparous, which means that they give birth to live young.