Explanation:

Certainly, here's an analysis of the options regarding a contract of indemnity:

- Option 1: Covers indemnity for loss caused by human agency only.

- A contract of indemnity typically involves compensation for losses caused by parties such as an agent or contractor.

- Option 2: Covers indemnity for loss caused by events not involving human agency.

- Generally, indemnity contracts focus on compensating losses caused by specific parties, rather than natural events like weather or floods.

- Option 3: Both (a) and (b).

- This suggests coverage for losses caused both by humans and other events.

- Option 4: Only (a).

- This is accurate, as traditional indemnity contracts usually relate to risks caused by individuals or human actions.

Option 4 is correct.

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