From the given alternatives, according to the dictionary, which word will come at the LAST position?
Armed

Atlas

Armour

Aspirin

Arrival

Let us arrange the given words in alphabetical order as they would appear in a standard English dictionary:
All words start with 'A'.

Comparing the second letters: Armed, Armour, Aspirin, Arrival have 'r' or 's', while Atlas has 't'.

Since 't' comes after 'r' and 's' in the alphabet sequence, Atlas will automatically be positioned last.

Let's verify the complete sorted sequence:

Armed (A-r-m-e)

Armour (A-r-m-o)

Arrival (A-r-r)

Aspirin (A-s)

Atlas (A-t)

Thus, Atlas comes at the LAST position.