The incorrect part of the statement is:

“But Bovary 'has' 'the most spirit' and determination.”

The correct version should be:

“But Bovary 'has' 'more spirit' and determination.”

Here's the explanation:

In the given sentence, the use of "the most" implies a superlative degree, indicating that Emma Bovary has the highest level of spirit and determination compared to any other character. However, the context suggests that the intention is to compare Anna Karenina and Emma Bovary, indicating that Bovary has a greater level of spirit and determination in comparison to Anna Karenina. Therefore, it is more appropriate to use the comparative form "more" instead of the superlative form “the most.”

The corrected sentence would be:

“In many respects, Anna Karenina and Emma Bovary are similar characters, but Bovary has more spirit and determination.”