at
in
to
on
Answer is Wrong!
Answer is Right!
The correct answer is C. to.
The preposition “to” is used to indicate the direction of movement. In this case, the soldiers are moving towards their enemy.
The other options are incorrect because they do not indicate the direction of movement. The preposition
“at” is used to indicate a location or position. The preposition “in” is used to indicate a place or location. The preposition “on” is used to indicate a surface or location.