The correct answer is option 'C', which means that a group can hold up to 5 properties. Let's discuss the reasons behind this answer in detail.

1. Definition of a group:
- In the context of this question, a group refers to a collection of individuals who come together to jointly own and manage properties.
- By forming a group, these individuals pool their resources and share the responsibilities and benefits of property ownership.

2. Advantages of forming a group:
- There are several advantages to forming a group for property ownership:
- Shared financial burden: By pooling resources, the financial burden of acquiring and maintaining properties can be significantly reduced for each individual.
- Diversification of assets: Owning multiple properties through a group allows for diversification of investment, minimizing risks and maximizing returns.
- Shared responsibilities: Each member of the group can contribute to the management and maintenance of the properties, ensuring efficient operations.
- Enhanced purchasing power: With more resources at their disposal, a group can negotiate better deals and access properties that may be out of reach for individual buyers.

3. Maximum number of properties a group can hold:
- The question specifically asks for the maximum number of properties that can be held by a group.
- The correct answer is option 'C', which states that a group can hold up to 5 properties.
- This means that the upper limit for the number of properties a group can collectively own is 5.

4. Considerations for property holding limits:
- The actual maximum number of properties a group can hold may vary depending on various factors such as legal regulations, financial capabilities, and management capabilities.
- Legal regulations: Different jurisdictions may impose restrictions on the number of properties a group can own. It is important to comply with local laws and regulations to avoid any legal issues.
- Financial capabilities: The financial strength of the group members will determine their ability to acquire and maintain multiple properties. It is crucial to assess the financial feasibility of owning and managing additional properties.
- Management capabilities: Proper management and maintenance of properties require time, effort, and expertise. The group must ensure that they have the necessary resources and skills to effectively manage the properties they own.

In conclusion, a group can hold up to 5 properties, as stated in option 'C'. However, it is important to consider legal regulations, financial capabilities, and management capabilities when determining the actual number of properties a group can effectively hold.