Here are the synonyms for the underlined words in the sentences:
The situation is a conundrum - a puzzle.
Synonym: riddle
After seeing the picture of the starving people, we felt compassion or pity for their suffering.
Synonym: empathy
Mom gave her daughter a nice present. She smiled as she opened the gift.
Synonym: package
Marla has four kids. Her children were obedient.
Synonym: compliant
After the heavy rains, the stream became murky, in fact, the water was so cloudy you couldn't see the bottom.
Synonym: turbid
A synonym is a word or phrase that has a similar meaning to another word. Understanding synonyms can improve vocabulary and help in expressing ideas more precisely. In these sentences, each synonym provides an alternative that can convey a similar meaning.