Final answer:
The correct statement to repeatedly call a function every 50 milliseconds is setInterval(animate, 50).
Step-by-step explanation:
The statement that will call a function named animate every 50 milliseconds is b) setInterval(animate, 50). The setInterval function is used to call a function or execute a code snippet repeatedly with a fixed time delay between each call. This function will continue to call animate every 50 milliseconds until clearInterval is used to stop it.