Fill in the blanks in the following sentence with the most appropriat…

The correct answer is Option (2) → at, towards, amongst

Prepositions of place and direction:

• First blank, at: "at some distance" (or "at a distance") is the fixed phrase for a point some way off.
• Second blank, towards: towards shows movement in the direction of something; they rushed in the direction of the trees.
• Third blank, amongst: amongst (among) means in the middle of a group of three or more; they hid in the middle of the trees.
• Complete sentence: As soon as they saw a policeman at some distance, they rushed towards the trees and hid amongst them.
  Example: The deer disappeared amongst the bushes.

Why the Other Options are Incorrect?

Option 1: on, for, into — Incorrect.

• "On some distance" is not an English phrase.
  Example: The book is on the table.
• "Rushed for the trees" gives a purpose or target, not the direction of the movement.
  Example: The children rushed for the ice cream.
• "Hid into them" is not used; one hides in or among things.
  Example: She walked into the room.

Option 3: off, into, under — Incorrect.

• "Off some distance" is not the phrase for seeing someone some way away.
  Example: He fell off his bicycle.
• "Rushed into the trees and hid under them" can be said on its own, but the first blank already rules this option out; "hid under them" also places them below the trees rather than hidden among them.
  Example: The cat ran into the house and hid under the bed.

Option 4: in, over, between — Incorrect.

• "In some distance" is not an English phrase.
  Example: The keys are in my bag.
• "Rushed over the trees" means above or across them.
  Example: The plane flew over the city.
• Between is used mainly for two things, not for a number of trees.
  Example: The ball rolled between his feet.

Contrast: "amongst" (among) is used for three or more things; "between" is used mainly for two.