Answer:
B. Trespass
Step-by-step explanation:
To trespass means to gain an unauthorized access to someone else's property.
Theft means an act or a crime of stealing.
Polymorphism is a process in which something appears or exists in more than one form.
Denial of service(also called DoS, for short) is a situation whereby an attacker or a perpetrator(an unauthorized user) interrupts an authorized user's access to a property which may be a network, computer or other related items.
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