Sergei considers the goldfish to be his friend. From the statement, it
is shown that Sergei has trust issues with other beings (May it be a human or
animal). He may have a dreadful experience in the past that prevents him from befriending
others. And he made an exception with the goldfish because he found out that
the goldfish will not leave him even if he is troubled.
The last sentence is the correct answer
it depends on what library your in but ask the library girl or man I don't know ehat they are called but try asking them
