What is TAEAC in writing

Tokyo Electronic Acoustic company ( company's formal name is TAEAC corporation

not concrete, existing in thought or as an idea but not having a physical or concrete existence

the correct answers are:

c. “never in the history of his people had a man married a woman who spoke a different tongue.”

d. “‘it has never been heard,’ was the verdict of an old man speaking a few weeks later.”

e. “this man had come with others to commiserate with okeke.”