Which of these is NOT a valid way to execute promises p1 and p2?

The statement regarding why the second option is not a valid way to execute promises p1 and p2 can be understood by recognizing the mechanics of asynchronous programming in JavaScript. In this scenario, the code snippet await p1; p2(data); is attempting to call the function p2(data) immediately after awaiting p1, but it does so without properly defining data.

When using the await keyword, it should be placed before the promise to pause the execution until the promise resolves. The promise p1 is awaited, which means that the code execution will pause until p1 settles. However, since data is not defined or assigned a value from the resolved promise of p1, this results in a reference error—data has no value. Thus, this option fails to execute properly because it lacks the necessary context to provide the result of p1 to p2.

In contrast, the other methods provided effectively ensure that p1 resolves before attempting to use its resolved value with p2. The first option chains the promise correctly, the third option utilizes an async function with proper handling and await, and the fourth option also properly assigns the result of