If someone is offered a free gift or service in exchange for private information or access to a computer system, what type of social engineering is taking place?

Answer: Quid pro quo / quid go pro (something for something)

Explanation: Quid pro quo is an exchange of equally valued goods or services. It is a Latin phrase used in English to mean an exchange of goods or services, in which one transfer is contingent upon the other I. e "a favor for a favor". Quid pro quo indicate the type of agreement where two parties concur to make a mutual exchange. "This is given because that is expected."