What changes Lady Bracknell's mind and causes her to approve of Algernon marrying Cecily?

She finds out that Cecily has a lot of money and investments.

She finds out that Cecily has a lot of money and investments.

She sees Cecily and Algernon's deep love for each other.

She sees Cecily and Algernon's deep love for each other.

She observes how smart and caring Cecily is.

She discovers that Cecily is actually Ernest's ward, and therefore has a legitimate connection to Algernon's family.