Answer: The answer is A, hopeful.
Explanation:
The reason why is because the words improve, cure, and prevent, in a sentence, mean's something is going to get better which gives off the feeling of hope.
Answer:
In chemistry, there are three definitions in common use of the word base, known as Arrhenius bases, Brønsted bases and Lewis bases. All definitions agree that bases are substances which react with acids as originally proposed by G.-F. Rouelle in the mid-18th century
Answer:
The word would be are but it does all but one.