The correct answer is option 2. The meaning of the word hasty is done in urgency or in a hurry. The word is used in this context in sentence A to describe the decision as rash / quick. In sentence B, the word is used to describe the currents as speedy. However, the word sounds absurd in sentence C. Instead, the word rusty suits the context more appropriately. It is used to describe something that is covered with rust (metal decay). Rusty old tin sheets are nailed on to the roof or the sides of buildings to give them a slapdash appearance