Final answer:
Tiberius was at odds with several family members, but the question's correct choice for his mother is b) Livia, his stepmother. Tiberius is also known for his conflicts with Agrippina the Younger, who was part of the extended imperial family.
Step-by-step explanation:
Tiberius, the second emperor of the Roman Empire, often found himself at odds not with his mother, Livia, but rather with other family members. The confusion may arise from the turbulent family dynamics of the Julio-Claudian dynasty. Tiberius was adopted by Augustus, making Livia his stepmother. While Augustus had issues with his own children—exiling his daughter and granddaughter, both named Julia—it was Tiberius’s relationship with his brother’s family, especially his nephew Germanicus and niece by marriage Agrippina, that troubled him. This complexity is reflective of the intricate and often fraught familial relationships within the imperial family.
The correct answer to the question is b) Livia, as she was Tiberius's stepmother with whom he reportedly had a complicated relationship. However, if you are searching for iconic conflicts within the family, the infamous feud with Agrippina, the wife of Germanicus and mother of Caligula, is also notably documented in Roman historical texts. Agrippina the Younger, though not Tiberius's mother, is a prominent figure who experienced power struggles within the family—eventually marrying Emperor Claudius and being implicated in a plot to murder him.