Not sure but i did it anyhow

I just completed a survey that i never seen before.
All the answers were already marked for me and wouldn't allow me to change them. All i did was click the next arrow until done and it paid me.

I don't known if it was suppose to do this so Im not going to post what one it was but i never seen this before and i have did a ton of surveys.

Hind site: lets have more of those!!