Snakes do not care for you. They will try to get away from you.
So as long as you don’t sit on one, you’re bueno.
Gorillas are so alike us and have social behaviour that it would find you in the mall (as it would definitely smell you at some point) and there’s really nothing you could do to appease it enough.
Looking a silverback in the eyes can be a death sentence, which you won’t be able to run away from.
You can get away from snakes with a brisk walk, and they would never challenge you unless cornered.
Also, you can fight a snake with a stick, whereas even if this mall was American and you had a handgun, you’d have a tough time taking down the gorilla before it ripped you to shreds.
There’s no scenario in which it’d be smarter to pick the gorilla. Not even one where it’s from a zoo.