The pronoun that best completes the sentence is the pronoun "me" and it is used as a direct object. So the complete sentence should be: "Jeremy bought Patrick and me tokens for the games. We used the pronoun "me" because it is used as direct object which is the receiver of the action "bought".
Answer :
The main advantage of using email to complain about a service or product is :
A; an email can be sent to multiple people at the same time
Email has two features of Cc and Bcc. Cc or the carbon copy feature helps to send the email to multiple persons and they they see all the people to whom the email has been sent. Bcc or the blank carbon copy feature helps to send the email to multiple recipients without the knowledge of the original recipient.
These features of the email prove to be advantageous while complaining about a service or a product. With the help of these features one can keep all the concerned people in the loop. Also a blank carbon copy can be sent to family members to keep a record of the original complaint.