In each of the questions given below a/an idiom/phrase is given in bold which is then followed by five options which then tries to decipher its meaning as used in the sentence. Choose the option which gives the meaning of the phrase most appropriately in the context of the given sentence.

Q:

The border is surrounded by forces who mean business.

• 1
  being selfish
• 2
  being happy
• 3
  being worried
• 4
  being serious or dedicated
• 5
  being nostalgic