$1.$ When a web app runs in a browser and it executes an intensive chunk of code without returning control to the browser, the browser can appear to be frozen. This is called $\_\_\_\_\_\_\_\_\_.$

$2.$ A $\_\_\_\_\_\_\_\_\_$ is a single process that a program can use to complete tasks.

$3.$ JavaScript is multi$-$threaded.

True

False

$4.$ Alerts are blocking.

alert$(\text{'}$This is an alert'$)$;

True

False

$5.$ Why wouldn't this pseudocode work?

let response $=$ fetch$(\text{'}$myImage$.$png$\text{'})$;

let blob $=$ response.blob$()$;

$//$ display your image blob in the UI somehow

$6.$All callbacks are asynchronous.

True

False