Final answer:
Peter Stockmann is likely to show a polite but condescending attitude towards Mrs. Stockmann based on his general behavior in Henrik Ibsen's play 'An Enemy of the People'.
Step-by-step explanation:
The question, which asks about Peter Stockmann’s attitude toward Mrs. Stockmann when he arrives at her house, pertains to the characters in Henrik Ibsen's play “An Enemy of the People”. Unfortunately, the reference provided seems to pertain to Jane Austen's “Pride and Prejudice”, discussing Mr. Collins, which is unrelated to the play in question. However, based on the choices provided and knowledge of Ibsen's play, Peter Stockmann generally displays a polite but condescending attitude towards most other characters, due to his position as the mayor and his self-righteous belief in his own correctness, and by association, this is likely to extend to his interactions with Mrs. Stockmann as well.