Identify an example of decomposers that are found in the bottom of a pond.

Flagellates

The correct answer is Option (3) – Flagellates

Flagellates are microscopic, single-celled organisms that can be found in both freshwater and saltwater environments. Some flagellates are decomposers, meaning they break down dead organic matter from plants and animals that sink to the bottom of the pond. They play an important role in the pond ecosystem by recycling nutrients back into the water column.

Here's a short explanation of the other choices:

• Zooplankton are microscopic animals that drift in the water column and feed on phytoplankton and other small organisms.
• Jellyfishes are free-swimming cnidarians that are also found in the water column. They are not typically found at the bottom of ponds.
• Phytoplankton are microscopic algae that live in the water column and carry out photosynthesis.