With which variable is engine displacement most strongly correlated?

Group of answer choices

tailpipe CO$2$ in grams$/$mile for fuelType$1$

annual petroleum consumption in barrels for fuelType$1$

combined MPG for fuelType$1$

manufacturer $($division$)$ assigned ID

engine cylinders

vehicle volume $=$ hlv $+$ hpv $+$ lv$2+$ lv$4+$ pv$2+$ pv$4$

categorized vehicle type $($Hatchback $|2-$Door Passenger $|4-$Door Passenger $|$ Other$)$ based on raw volume fields

primary fuel type based on $[$fueltype$1]$