Explanation
A child playbook can access the parent playbook's action results by using the scope parameter when configuring the playbook block in the parent. The scope parameter allows the user to specify which action results from the parent playbook should be passed to the child playbook as input parameters. Child playbooks cannot access parent playbook data while the parent is still running, and setting the scope to ALL when starting the child does not affect the data access. The parent can create an artifact with the data needed by the child, but this is not the only mechanism to do so. Reference, page 17.

Explanation
The correct answer is C because after a playbook has run, the results are stored in the container that triggered the playbook. The container is a data object that represents an event or a case in Phantom. The container contains information such as the name, the description, the severity, the status, the owner, and the labels of the event or case. The container also contains the artifacts, the action results, the comments, the notes, and the phases and tasks associated with the event or case. The answer A is incorrect because after a playbook has run, the results are not stored in a Splunk index, which is a data structure that stores events from various data sources in Splunk. The Splunk index is not directly accessible by Phantom, but can be queried by Phantom using the Splunk app. The answer B is incorrect because after a playbook has run, the results are not stored in a case, which is a type of container that represents a security incident in Phantom. The case is a subset of the container, and not all containers are cases. The answer D is incorrect because after a playbook has run, the results are not stored in a log file, which is a file that records the activities or events that occur in a system or a process. The log file is not a data object in Phantom, but can be a data source for Phantom. Reference: Splunk SOAR User Guide, page 19.

Explanation
The correct answer is D because to run two different on_poll searches, you need to configure a second Splunk asset with the second query. The on_poll search is the query that Phantom uses to fetch events from Splunk and create containers and artifacts. You can only specify one on_poll search per Splunk asset. If you want to run another on_poll search, you need to create another Splunk asset with a different name and IP address and configure the second query in the asset settings. See Splunk SOAR Documentation for more details.