Why was the fourth amendment added to the constitution? to keep the government from abusing its authority to prove to citizens that the government would be tough on criminals to enable the government to find ways to assert its authority to show leniency to people who are accused of crimes

The answer is A. to keep the government from abusing its authority
The fourth amendment requires government officials to include  a warrant when they want to execute a search into someone's private proverty.
Without this rule, government officials could technically enter anyone's private property and do whatever they like there with the premise of searching for evidence