Explanation:

- Option 1: Weak evidence often necessitates corroboration to strengthen the case. Circumstantial evidence might require additional support to be compelling.

- Option 2: Presumptive evidence allows for assumptions unless disproved. Circumstantial evidence can suggest facts by inference.

- Option 3: Conviction based solely on circumstantial evidence is possible if it leads logically and conclusively to a guilty conclusion beyond reasonable doubt.

- Option 4: All the above options accurately describe aspects of circumstantial evidence.

Option 4 is the correct choice. All the statements are valid reflections of how circumstantial evidence works within a legal context.