From the quotations you give, it appears that you are using the English Standard Version of the Bible (ESV), so I shall use that translation in my answer. All references are to John's Gospel, chapter and verse. Your instructions tell you to answer one of the questions, but you do not indicate which one you plan to answer, so I shall give comments on the first three, so you have a choice.
In question one, Jesus's response is "Destroy this temple, and in three days I will raise it up" (2.19). John says that Jesus refers here to the temple of his body, which was resurrected in three days (2.21). When Jesus was resurrected, his disciples remembered these words. The next few verses say that "many believed in his name when they saw the signs that he was doing" (2.23), but Jesus "did not entrust himself to them, because he knew all people" (2.24). The relationship was therefore one-way. After further signs, people come to trust Jesus more and to follow him. This is later related of the Samaritans (4.39–42) and the Galileans (4.43–45).
In question two, the significant point is that the Jewish leaders feel Jesus shows no respect for the Sabbath. He then exacerbates this fault by calling God his father. Jesus heals a man and tells him, "Take up thy bed and walk" (5.8). When he is charged with breaking the Sabbath, Jesus replies that his father, God, is working on the Sabbath, and so is Jesus. John writes:
This was why the Jews were seeking all the more to kill him, because not only was he breaking the Sabbath, but he was even calling God his own Father, making himself equal with God. (5.18)
In question three, the Jews are angry with Jesus for saying that he is the son of God and has come down from heaven:
They said, "Is not this Jesus, the son of Joseph, whose father and mother we know? How does he now say, 'I have come down from heaven'?" (6.42).
They also do not understand when Jesus tells them that he gives his flesh for them to eat (6.52). Therefore, "many of his disciples turned back and no longer walked with him" (6.66). However, when Jesus asks the twelve if they are going to leave him as well, Simon Peter answers that they still believe in him:
Lord, to whom shall we go? You have the words of eternal life, and we have believed, and have come to know, that you are the Holy One of God. (6.68–69).