Which of the following is NOT a reason why racial-ethnic intermarriages have increased?

A) Workplaces and neighborhoods are more integrated than in the past.
B) Groups intermarry when there is a shortage of eligible spouses in their own group.
C) Groups that have been in the United States only a short time view intermarriage as a way to acculturate.
D) Society is becoming more accepting of interracial marriages.

Groups that have been in the United States for only a short time may still be navigating their own cultural identities and community bonds, and intermarriage as a strategy for acculturation is not a primary reason for the increase in racial-ethnic intermarriages. The other options (A, B, and D) directly contribute to the increase by fostering environments where different racial and ethnic groups interact more frequently and are more accepted by society.