Which of the following code snippets are equivalent in JavaScript?

The correct answer is that both code snippets are equivalent in JavaScript. In JavaScript, object properties can be accessed and assigned values in two ways: dot notation and bracket notation.

In the first snippet, dot notation is used, which accesses the property breed directly from the dog object. This is a straightforward way to manipulate object properties when the property name is known and is a valid identifier.

In the second snippet, bracket notation is employed, which allows for more flexibility. It can be used to access properties with names that may not conform to identifier naming rules or when the property name is stored in a variable. In this case, the string "breed" is used to set the breed property of the dog object.

Both methods achieve the same outcome: they assign the value "German Shepard" to the property breed of the dog object. Thus, both snippets are functionally identical in this context, confirming that the answer encompasses both provided snippets.