She played on society's fears such as technology and science
I think it is because Balboa considers himself a great explorer like Cristobal Colon (Cristopher Columbus) and Vespucci and the Pizarro brothers. the Of course Cristobal Colon discovered the Americas as did Vespucci whose first name was Amerigo so America was named after him. The Pizarro brothers discovered Peru with its' riches of gold and silver and the empire of the Incas.,Balboa was the first explorer to reach the Pacific Ocean by land over the isthmus of Panama. He later founded a settlement in Panama.
Extraneous means irrelevant or unneeded. essential means absolutely needed.
so they are opposites.
The other opposites in that set are mediocre (meh average) and extraordinary(amazing)
D
Just say "The language..." Please provide more info about the question. Do you want it to be formal? Are you writing an essay for fun so it does not need to be formal?