Final answer:
Diana's shock at Anne's request for eternal friendship is out of context and thus false. Twyla and Roberta's potentially strained friendship is attributable to complex personal and social factors. The statement about William of Orange's marriage and claim to the English throne is true.
Step-by-step explanation:
The question regarding Diana's shock at Anne asking her to be her friend forever is likely discussing characters from a work of English literature, such as "Anne of Green Gables" by Lucy Maud Montgomery. Due to the context not aligning with known events from this literature, the answer to the statement is False.
For the second part, Twyla and Roberta's friendship dynamics are explored in Toni Morrison's short story 'Recitatif'. The complexity of their relationship and the challenges they face in maintaining their friendship are central themes. Life circumstances, personal growth, and social issues may contribute to their inability to remain inseparable over time.
Regarding William of Orange, the statement that he was married to James II's daughter, Mary, and also was in line for the throne of England is True. William of Orange became William III of England, ruling jointly with his wife, Mary II, following the Glorious Revolution.