Option 2 is wrong and should be worded differently…the rule reads as this…
NCAA 2-39 Half Swing
Half Swing
SECTION 39. An attempt by the batter to stop the forward motion of the bat while swinging, which puts the batter in jeopardy of a strike being called. The half swing shall be called a strike if the barrel head of the bat passes the batter’s front hip. This does not apply to a bunt attempt when the batter pulls the bat back.
Crossing home plate has nothing to do with anything…where do you guys get this nonsense from…lol