Final answer:
The symbol A corresponds to the phrase Delta, which is commonly used in Mathematics and Science to represent a change in a certain quantity.
Step-by-step explanation:
The symbol A corresponds to the phrase Delta. Δ is a letter of the Greek alphabet and is commonly used in Mathematics and Science to represent a change in a certain quantity or a final value minus an initial value. For example, Δx represents the change in x and Δt represents the change in time.