When protection is encouraged to protect a growing domestic industry;which of the following is being used?

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The infant-industry argument is used to justify protectionism measures to protect a new or growing domestic industry from external competition until it is strong enough to compete on its own. This type of protectionism is often seen as being temporary and is usually removed once the industry has matured enough to compete with foreign producers. The other choices listed may be used for protectionism in other circumstances, but they are not directly related to protecting a growing domestic industry.

When Protection Is Encouraged to Protect a Growing Domestic Industry;which