Which of the following is a type of large, brown seaweed that grows in shallow, nutrient-rich salt water near coastal fronts around the world?

Kelp

The correct answer is Option (2)- Kelp

Kelp is a type of large, brown seaweed that grows in shallow, nutrient-rich saltwater near coastal fronts around the world.

Explanation:

• Kelp is a type of seaweed belonging to the order Laminariales. It is characterized by large, complex structures and can form underwater kelp forests.
• These seaweeds are commonly found in cold and nutrient-rich coastal waters, providing important habitats for various marine organisms.
• Alpina, Seagrass, and Corals are distinct from kelp:
• Alpina: Not typically associated with seaweed.
• Seagrass: confused with seaweeds, but are actually more closely related to the flowering plants that you see on land. Seagrasses have roots, stems and leaves, and produce flowers and seeds. They evolved around 100 million years ago, and today there are approximately 72 different seagrass species that belong to four major groups. Seagrasses can form dense underwater meadows, some of which are large enough to be seen from space.
• Corals: Marine invertebrates forming coral reefs, unrelated to seaweeds.

So, the correct answer is Kelp.