Final answer:
An accused person can appeal a decision if they were unfairly treated or misconduct occurred in the trial process. Appeals are exceptions to the rule of double jeopardy.
Step-by-step explanation:
The process and right to appeal allows an accused person to challenge a decision if they believe they were unfairly treated or if there was misconduct in the trial process. This means that statement (i) and statement (ii) are true. Additionally, appeals are exceptions to the rule of double jeopardy, which means statement (iii) is also true. Therefore, the correct answer is d. i, ii, and iii.