The code:

let timerId = setInterval(timedFunction, 1000);

setInterval schedules timedFunction to run every 1000 ms.

It returns an interval ID (here stored in timerId), which is used to cancel the interval later.

To cancel:

Use clearInterval(timerId);

This is the standard browser (and Node.js) API:

let id = setInterval(fn, delay);

clearInterval(id); stops future executions of that interval.

Check other options:

B. removeInterval(timerId);

There is no removeInterval function in the standard JavaScript timer API.

C. removeInterval(timedFunction);

Again, no such function; and timers are cancelled by ID, not by the callback function reference.

D. clearInterval(timedFunction);

clearInterval expects the ID returned by setInterval, not the callback function.

Passing the function does not cancel the timer.

Therefore, the correct statement is:

Answer: A

Study Guide / Concept References (no links):

Timer APIs: setInterval and clearInterval

Relationship between timer ID and cancellation

Difference between interval ID and callback function

Basic async timing patterns in JavaScript