Question

trade blocs help countries by
limiting competition.
increasing barriers to trade.
improving product production.
allowing the pooling of resources.

Explanation:

Trade blocs are groups of countries that reduce/eliminate trade barriers among members. Limiting competition and increasing trade barriers are contrary to their purpose, as they aim to boost trade and cooperation. While they may indirectly support production, their core collaborative benefit is enabling member countries to combine resources (like labor, capital, or raw materials) for mutual economic gain.

Answer:

allowing the pooling of resources.