電車で足を___。
Q. Which form expresses 'my foot got stepped on' (adversity passive)?
Translation
My foot got stepped on in the train.
Explanation
踏まれる is the passive of 踏む (to step on) and is the standard way to express suffering an action: 足を踏まれました. 踏ませる is causative ('make someone step'), and 踏める is potential ('can step').