Answer:
"They [old Barney and young Barney] never knew when they were safe from punishment. They were frequently whipped when least deserving, and escaped whipping when most deserving it."
Step-by-step explanation:
The first one demonstrates Colonel Lloyd's unpredictability when it says, "They never knew when they were safe". It shows that Colonel Lloyd was fickle when it says, "whipped when least deserving... escaped whipping when most deserving".
The second one simply states how he abuses his slaves, and the third one states how many he must've owned. Neither of them say anything about his behavior and emotional state.