which of the following would most benefit from quantum computing?\n animating cartoons\n running a cash…

Brief Explanations:

Quantum computing has potential in cryptography for enhanced security. Protecting a device from a cyber - attack can involve cryptographic methods where quantum computing can offer more secure encryption and decryption techniques compared to traditional computing. Animating cartoons mainly requires graphics processing, running a cash register is a basic business - related computational task, and determining rainbow colors is a matter of basic physics and optics which don't directly benefit as much from quantum computing.

Answer:

protecting a device from a cyberattack