It is ironic that Confucius's son died an early death. We can infer that the death of Confucius' son, Carp is ironic, he suffered an early death when the symbolism of the carp fish is longevity, because carps can get very old, it also represents the dragons due to big scales on the body of a carp. According to the meaning of the carp Confucius' son, Carp, should have a long live which did not happen.
I think it's lumine to luminescent but I might be wrong
You add a comma to prepositional phrase when you want to tell more about the adjectives and adverbs.
Answer:
3 -a , 4- i don't know, 5-a, 6- c
