I think it's A, because "very" seems like a weak word, and "nice" also seems like a weak word judging by the sentence. Hope I helped! :D
"She said she could play the piano"
Indirect speech isn't quoting the character's exact words but instead reporting what they/she/he said- It is also sometimes called reported speech
reported speech
[reported speech]
a speaker's words reported in subordinate clauses governed by a reporting verb, with the required changes of person and tense (e.g. he said that he would go, based on I will go).Also called indirect speech. Contrasted with direct speech.
Answer:
The answer is to show that Earth's water is not changing rapidly as it once was.