1.umpire

a. the player responsible for the area between 2nd and 3rd base
b. the player on the mound in the middle of the field
c. the player positioned behind home plate
d. occurs when a fielder fails to make a play
e. a ball hit outside the 1st or 3rd base lines
f. a pitch thrown outside the strike zone
g. area over home plate between the armpits and the knees
h. a pitcher can throw three of these to get a batter out
i. the official behind home plate
j. when a pitcher throws out a base runner

The correct answer is:

i. The official behind home plate.

An umpire is the official responsible for making calls and enforcing the rules of the game in various sports, including baseball. In baseball, the umpire is positioned behind the catcher or the plate umpire, who is responsible for calling balls and strikes, making calls on base runners, and enforcing other rules of the game.