Final answer:
Without context specifically mentioning Marilla, it's not possible to determine how her emotional state progresses. The provided excerpts suggest emotions such as anxiety and optimism in various characters, but without reference to Marilla, no accurate answer can be given.
Step-by-step explanation:
The question appears to be evaluating a character's emotional progression within a literary passage. Although the given excerpts do not specify the character Marilla, they do help in understanding how characters can evolve emotionally in literature. In the first excerpt, we see an overwhelming absorption of the author's message which might lead to anxiety or excitement. The second excerpt shows Mildred becoming restless and irritable, suggesting an increase in anxious behavior. The third excerpt discusses Mrs. Bennet's feelings of delight, suggesting an increase in optimism or enthusiasm. Lastly, the description of a character 'pale as death, anxious and absorbed' while performing a task, portrays a deep sense of anxiety. Without context that specifically mentions Marilla, it's difficult to choose between the provided options (A) Optimistic, (B) Anxious, (C) Indifferent, or (D) Enthusiastic. Therefore, an accurate answer cannot be given to this question without additional information about Marilla.