What is the similar meaning to the word "octogenarian"?

Mark the letter A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.  

 The Germany's war hysteria has accounted for its people's hostility towards foreigners.

We sometimes go away from the city to the countryside for a __________ of fresh air.

Read the following passage and mark the letter A, B, C, or D to choose the word or phrase that best fits each of the numbered blanks from 25 to 29  

SOUNDS FROM THE PAST

     Much of the music we listen to today is a mixture of styles from various countries and time periods. A lot of music has (25) __________ in older traditional songs heard in many different countries around the world. Traditional, (26) __________ music is collected over decades, if not centuries. Younger generations learn these songs from their elders through practice and repetition. 

     Since music can tell us a lot about different cultures (27) __________ its lyrics, melodies, and the instrument used, researchers and music fans see it as an essential part of history. They fear that traditional and older types of music are slowly disappearing, partly because they are less likely to be written down or recorded, or because the format in which they are recorded is no longer (28) __________ Also, younger generations may not find such music very appealing, so once older generations pass away, the music may die (29) __________ them. Whole genres of music may go extinct.

The martins have confirmed their strong __________ to charity actions by donating a lump sum of money again.

The teacher explained the lesson twice __________ the students didn't understand it.

During difficult economic times, many people have to_____________