Which phrase or sentence from the text MOST fully explains why the sun and the moon live in the sky?

Match the definition to the word. infection conjugation affix,syntax specializion generalization amelioration etymology pejoration declension. 1.word derivation. 2.gaining a negative connotation. 3.narrowing in meaning. 4.going a positive connotation. 5.verb inflections. 6.ending denoting grammatical function. 7.broadening in meaning. 8.relations of sentence parts. 9.john inflections. 10.morphine added to a base.