The parable of the drag net, according to Jesus, was to teach His listeners about the
Answer Details
The parable of the drag net is found in Matthew 13:47-50. Jesus compared the kingdom of heaven to a large net cast into the sea that caught fish of every kind. When it was full, the fishermen pulled it ashore, sat down, and sorted the catch: the good fish were collected into containers, while the bad fish were thrown away.
Jesus then explained the meaning directly: at the close of the age, angels will come and separate the wicked from the righteous, and the wicked will be thrown into the furnace of fire (Matthew 13:49-50). The parable is specifically about the final judgement at the close of age, when all people will be sorted and judged.
The parable does not teach about the reward of being righteous (although the righteous are preserved, the focus is on the act of judgement and separation). The options about mosquito nets and fishing nets are clearly unrelated to the spiritual teaching of the parable.