Final answer:
The claim that Tobias Santorelli becomes a nothlit due to a Yeerk technology called the Morph Gun is false. In the Animorphs series, Tobias becomes a nothlit after exceeding the two-hour time limit for staying in a morph, specifically his red-tailed hawk form.
Step-by-step explanation:
The statement provided in the student's question is false. In the science fiction series Animorphs by K.A. Applegate, the character Tobias becomes a nothlit, which is indeed an Andalite term for someone who remains in a morph for more than two hours and is permanently trapped in that form. However, he became a nothlit after staying in his red-tailed hawk form for too long, not by being turned into a hawk by a device called the Morph Gun. The Morphing technology in the series allows characters to acquire DNA and morph into different animals. It is the misuse of this technology that leads to Tobias's permanent change, not a separate piece of technology called the Morph Gun.