Which scenario would be a good opportunity to consider multithreaded code?

$$ Linnea needs to develop a program that reads from mult ple databases concurrently.

Alan needs to redesign a resource$-$intensive program to run on a weaker computer$-$

Demi needs to build a program that reads files sequentialy and processes them one by one.

$$ Rakesh needs to move his program to JavaScript to improve overall performance.