Write the next sentence in the following story.

How to identify red winged blackbirds
Know the red-winged blackbird's habitat.
You can find them by walking near the shore of a lake or river, using binoculars or a scope to spot them. Check trees and shrubs along the water's edge.

Choices:
[a]. There may not be many of them, but it is still fine to look. Make your observation easier by waiting a certain amount of time to get a glimpse.
[b]. You might also observe them while walking instead of on land. They might be moving one way or another.
[c]. You can take a boat out as well, but always take proper caution while operating boats. Red-winged blackbirds are almost always found near water sources.
[d]. Keep the area around the pond as dry as possible, and wipe down with a soapy sponge. You can hire a wildlife rehabilitation specialist for added protection.. The answer should be
[c].