Answer:
C) a sharp initial rise in price, then gradual lowering of prices to pre-attack levels.
Step-by-step explanation:
Actually the price of oil increased a lot after September 11 attacks, and they gradually decreased to almost pre-level attacks by 2003. Currently, almost 20 years later oil prices sharply decreased by the quarantine carried out in most of the world. Since people aren't allowed to leave their houses, the demand for gas and other products has dropped.
Before the September 11 attacks, the price of oil was $22 per barrel, five years later it was around $60 and one decade later it was $95. Currently it is around $18-$19, but this decrease will hopefully be temporary.