Answer: Bribery
Explanation:
Bribery can be defined as the act of giving something of the value in return for some kind of influence or action in return, which the receiver would have not offered without the price value.
Here, in this case also the oil company might have paid some bribe to the government officials in order to get approved their project.
Due to bribe the government officials approved their project without being thinking of the consequences of the project.