Final answer:
Flora and Amy, a lesbian couple together for 12 years, are likely to have had a legal marriage ceremony given the legal recognition of same-sex marriages, although social acceptance can vary. Without further context, we cannot assert that they have faced no discrimination or that they have adopted children together.
Step-by-step explanation:
The question asks which of the following is likely to be true of Flora and Amy's relationship, a lesbian couple who have been together for 12 years and describe their relationship as happy.
Considering the social and legal changes that have occurred regarding same-sex relationships, it is not possible to claim that they have faced no discrimination (Option A) or that they have adopted children together (Option C) without more context. However, because same-sex marriage has become legal in many places, it is quite possible they may have had a legal marriage ceremony (Option B), provided it is legal in their state or country. As for experiencing social acceptance (Option D), while society's views are shifting, the degree of acceptance can vary greatly depending on their location and community.
Given the information from various case studies and sociological research, discrimination against LGBTQ individuals has existed and may still exist, challenging Option A. It is also clear that there has been progress towards social acceptance and legal recognition of same-sex marriages, making Option D plausible, although it is not assured in all communities. Same-sex couples, like the one mentioned, may have the opportunity to marry legally and enjoy marital benefits, which points towards the increased possibility of Option B being the correct answer.