Unstated and anti-supported. This was a convention of sentimental novels that Chopin sought to avoid, which she did by following the local colorists’ more detached approach.

Unstated and anti-supported. This was a convention of the local colorists, but one that Chopin didn’t adopt.

Stated. This was a convention that Chopin adopted from the local colorists.

Unstated. The “strength” of anyone’s plot lines isn’t discussed in the passage.

Unstated and anti-supported. This was one of Chopin’s own conventions, and nothing suggests that she adopted it from other writers. In fact, the author explicitly notes that she didn’t adopt this convention from the local colorists. And the author seems to suggest that Chopin was writing about these kinds of protagonists back in the 1870s and 1880s, when she was interested in the local colorists, back before she became influenced by the New Women. So Chopin doesn’t seem to have adopted this convention from either group.