Step 1: Understand the topic.
This question is about withdrawing or abandoning a civil suit under the Code of Civil Procedure, 1908. The rule for this is Order XXIII, Rule 1. We must check four statements and pick the correct group.
Step 2: Test statement I.
Statement I says a plaintiff may withdraw or abandon a suit subject to the provisions of law. This is true. The plaintiff has the freedom to give up the suit, but within the limits set by the rules.
Step 3: Test statement II.
Statement II says that to file a fresh suit on the same cause of action, the court's permission is needed. This is also true. Without permission, the plaintiff cannot simply start the same case again.
Step 4: Test statement III.
Statement III says that if a suit is withdrawn without permission to file a fresh one, then a later suit on the same cause is barred. This is true as well. It stops people from filing the same case again and again.
Step 5: Test statement IV.
Statement IV says the court must always grant permission when asked. This is false. The court uses its own judgment and grants permission only on sufficient grounds, like a formal defect. So IV is wrong.
Step 6: State the answer.
Statements I, II and III are correct, while IV is not. So the right group is I, II and III. \[ \boxed{\text{I, II and III}} \]