Sorry, didn't know you were ignorant about options as well.
I was referring to the OPEN INTEREST in the April $35 PUTs. And you don't tell how many traded by looking at the $ price change, you look at volume (69 odf these today), for that day. (By the way, the price DID change today, by $0.05 = 7.7%, but that isn't relevant to the point here).
The highest open interest of ANY DPZ April Options is the $35 PUT, with 1,020 contracts (that's 102,000 shares of DPZ stock). No other Strike of CALLs or PUTs is even a 3rd of this quantity. So, there is clearly is strong vested belief that this will go to $35.