Question: How does the built-in `ngIf` structural directive change the rendered DOM based on this template syntax?

1. The `
   ` acts as a placeholder. If the product class field is "truthy," the `

   ` will get replaced by just the `product.name` value; if not, then nothing will get rendered.
2. The `
   ` will always be rendered, and if the product field is "truthy," the `

   ` element will contain the `product.name` value; otherwise it will render the `

   ` element with no value in it.
3. It produces an error, since ngIf is not a built-in structural directive.
4. If the product class field is "truthy," then the rendered DOM will include the `
   ` with the value of the `product.name` field. If it is not "truthy,' the rendered DOM will not contain the `

   ` element.

Answer: The correct answer of the above question is Option D:If the product class field is "truthy," then the rendered DOM will include the `