Choose the most appropriate word from the options given below to complete the following sentence:

It was her view that the country's problems had been_________ by foreign technocrats, so that to invite them to come back would be counter-productive.

Choose the word from the options given below that is most nearly opposite in meaning to the given word:

Frequency

Which of the following options is the closest in meaning to the world below:

Circuitous

Choose the most appropriate word from the options given below to complete the following sentence:

If we manage to ________ our natural resources, we would leave a better planet for our children.