The correct option is Create a JavaScript function that deeply clones an object using recursion and correctly handles arrays and objects.

This prompt guides the model to walk nested structures and to copy each level independently so that references are not shared with the source. Calling out recursion and the need to treat arrays and plain objects appropriately steers the implementation toward visiting every nested property and building new arrays and objects as it goes. This kind of guidance greatly reduces partial or shallow results and is more likely to yield a correct deep clone.

Use JSON.stringify and JSON.parse to clone a JavaScript object is incorrect because JSON serialization drops functions and symbol keys and it converts Dates to strings. It also loses class instances and special types such as Map and Set and it fails on circular references, so it does not reliably produce a true deep clone.

Write a function that copies only top level properties of an object is incorrect because that is a shallow copy. Any nested objects or arrays would still be shared with the original, which defeats the purpose of a deep clone.

Write a JavaScript deep clone function that does not use recursion and ignores arrays is incorrect because ignoring arrays means nested arrays will not be cloned properly and avoiding recursion without an equivalent traversal strategy will usually miss nested structures altogether.

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