In each of the following sentences, there is a blank space. Below each sentence,there are five words out of which one can be used to fill the blank to make the sentence grammatically and coherently correct. Find the most appropriate word that fit into the blank contextually.

Q:

Iran and India, with the_________ of the other countries, must cooperate closely to _______ the capabilities of the Afghan government.

• 1
  resistance, overpower
• 2
  assistance, improve
• 3
  help, guide
• 4
  support, ensure
• 5
  co-operation, deplete