Final answer:
Option (A), Mr. Bennet teases his wife about meeting Bingley likely because he enjoys her flustered reactions and finds the situation amusing, which reflects their personalities and relationship dynamic in Austen's novel.
Step-by-step explanation:
The reason Mr. Bennet teases his wife instead of telling her directly about his visit to meet Bingley is most plausibly because he enjoys seeing her flustered and finds it amusing. Given Austen's style of characterization through dialogue and action, Mr. Bennet's teasing reflects his personality and his relationship with his wife.
Mrs. Bennet's reactions to such teases often showcase her own nervous and invariably silly nature, as seen in Austen's descriptions throughout the novel. By not directly focalizing events through Mrs. Bennet's consciousness, Austen allows readers to interpret her character based on her outward expressions, which in the case of Mr. Bennet's teasing, often manifest as flustered and excitable responses that provide humor and insight into their marital dynamic.