Answer:
a macrocytic red blood cell present especially in some animals
Your answers is should be stated
The answer is D, a frame narrative is in essence a story within a story
For the first question it is brought
And for your second question your answer is held
It makes you feel and think a certain way about something. If optimism is a mental attitude, than it benefits the world by if you give a bad attitude towards polluting the earth other people can realize that and actually fight to stop that cause as one.