That is a definition of the word impact, but not the only one. <span />
Indifference because throughout the quote, the author just stated facts in a "no-emotion" standard. The use of the word "interesting" may lead to some thinking that it'd be fascination but the use of it does not change the overall tone much
When you talk about "Wave" Dale characterizes water as an element that gives life. Some people can think it is giving and taking life, but the correct option in here is A. gives life. Hope this can help