Which sentence about adjectives and adverbs is true?

Adjectives replace conjunctions while adverbs replace prepositions.
Adjectives describe nouns while adverbs describe verbs.
Adjectives describe actions while adverbs describe thoughts.
Adjectives replace nouns while adverbs replace verbs.

One person's trash is another person's treasure. instead of discarding unwanted appliances, tools, or clothes, try selling or donating them. karen wants to explain that discarding means "throwing away." which of the following passages has karen written correctly? "one person's trash is another person's treasure. instead of discarding . . throwing away . . unwanted appliances, tools, or clothes, try selling or donating them." "one person's trash is another person's treasure. instead of discarding--throwing away--unwanted appliances, tools, or clothes, try selling or donating them." "one person's trash is another person's treasure. instead of discarding [throwing away] unwanted appliances, tools, or clothes, try selling or donating them." "one person's trash is another person's treasure. instead of discarding (throwing away) unwanted appliances, tools, or clothes, try selling or donating them."