Which subatomic particle listed below has the least mass?
Correct answer: Electron

I am not a number.
AdeShake, what does LISTED BELOW mean in the question? Yours not wrong that there are smaller but you are wrong with your assertion that the answer is plain wrong.

wanderer
new info for me.thanks

Paul Steadman
AdeShake, Thank you for pointing this out.

AdeShake
babayaga69,
This answer is just plain wrong. The neutrino is the lightest of all sub-atomic particles being at the very least 500,000 times lighter than an electron and possibly up to 6,000,000 times lighter according to various research institutions around the world.

babayaga69
that one made me think😉