Het spitsuur should work too.
You can use the report a problem button during lessons to report alternative translations or issues.
Why can't I use "oorzakt" in this case? I thought "veroorzaakt" was the past form.
"Oorzaken" is not a verb, it is just the plural of the noun "oorzaak". I believe in this case you must use "veroorzaken", which conjugated in the 3rd person singular is "veroorzaakt" for present and past participle; "veroorzaakte" for simple past.
Oooh, okay. So I can't use "oorzaak" because it's not a verb, but "veroorzaken" is one, so I have to use it in the right conjugated form.
Thank you for your reply! I think I got it now :)