The speed of gas particles is influenced by temperature. If all of the canisters (W, X, Y, Z) contain the same amount of helium particles and are at the same temperature, then the average speed of the particles in each canister would be the same, because the speed of gas particles is related to the temperature of the gas.
However, if we do not have information about the temperatures of each canister, we cannot determine which canister has the fastest moving particles.
If the temperatures differ among the canisters, the canister with the highest temperature would have the fastest moving particles.
In summary, we need additional information about the temperature of the gas in each canister to determine which canister has the fastest moving particles.