Question

What makes enforcing safety standards a challenge for the Food and Drug Administration?

Many foods are imported from other countries, and the FDA must ensure those foods meet the same standards as US goods.
The FDA faces competition from the EPA, which sets standards for product labeling.
The FDA has no control over advertising laws, which may conflict with safety standard laws.
Many raw materials are exported to other countries, and the FDA must ensure those materials meet the same standards as international goods.

Answer 1

"Many foods are imported from other countries, and the FDA must ensure those foods meet the same standards as US goods."

Explanation: globalization and complex international supply chains make inspection and enforcement harder — the FDA has limited inspection resources, must coordinate with foreign authorities, and deal with differing standards and practices abroad. The other choices are inaccurate or irrelevant to the main enforcement challenge.