I can't see the examples. But assonance means a resemblance in the sounds of words or syllables either between their vowels (e.g., meat, bean) or between their consonants (e.g., keep, cape).
Answer:
Geologists search rivers, mountains, and caves for clues about how and when the Earth was formed.
Explanation:
This would be an important idea to include in your summary because it contributes to the central idea of the entire passage. The passage is about the work of geologists, and this sentence/idea is the main idea.
Answer:
to show respect for all of those who have fallen (passed away) in war for America, and the American people.
Unilever's Gibbs S.R. toothpaste