What action did Harry take to help Jack?

The action Harry took to help Jack, identified as pulling some strings, signifies that Harry used his influence or connections to assist Jack in a difficult situation. This implies that Harry engaged in proactive behavior, leveraging his resources or network to provide support, which typically involves navigating personal relationships or institutional frameworks to facilitate a favorable outcome for Jack.

This approach can be seen as an act of advocacy, showing a willingness to intervene on Jack’s behalf. It highlights Harry's capability to navigate complexities within social or organizational systems, which can often be a key factor in problem-solving scenarios. By pulling strings, Harry demonstrates his commitment to helping Jack overcome obstacles that might not be easily surmountable through conventional means.

Understanding this response in contrast to the other options illustrates the active nature of Harry's assistance. Ignoring the situation would display indifference, and working independently suggests a lack of collaboration or direct support. Advising Jack to confess could imply a passive stance and may not necessarily lead to a resolution, depending on the context. Therefore, pulling strings is the most effective action, showcasing engagement and support through utilizing connections.