Optimal Order Type for Minimal Market Impact

In a volatile market environment, a seasoned trader is looking to execute a large order for shares of XYZ Company without significantly impacting the stock's market price. The trader is considering three different order types:

1. A market order, which will execute immediately at the best available price.

2. A limit order, which will only execute at a specified price or better.

3. A stop-limit order, which becomes a limit order once a specified stop price is reached.

Given these options, the trader wants to ensure the least amount of market impact while attempting to secure as many shares as possible. Based on this scenario, which order type should the trader choose?