Final answer:
Spaghetti can be determined to be ready by its firmness to the bite or by using a kitchen timer to time the cooking process.
Step-by-step explanation:
A person can determine if spaghetti is ready by performing a simple test: tasting it. When spaghetti is cooked al dente, it should be firm to the bite.
This means that the spaghetti is cooked, but still has a slight firmness to it. To check if the spaghetti is al dente, Ali could have taken out a strand of spaghetti from the pot and bitten into it to see if it was firm enough. If the spaghetti was too soft and mushy, it would mean that it was overcooked and not ready yet.
Ali could have also used a kitchen timer to time how long the spaghetti has been boiling. Cooking times for spaghetti can vary based on the thickness of the pasta, but it is typically cooked for around 8-12 minutes. Once the timer goes off, Ali could have taken out a strand of spaghetti and tested for doneness.