Final answer:
The plants at Lick Creek bottom form a community which includes populations of different plants. An ecosystem also contains abiotic factors, while a population refers to a single species and landscape to a larger area. Therefore , the correct answer options is c)
Step-by-step explanation:
All the plants (trees, shrubs, and grasses) at the Lick Creek bottom collectively are considered a community. This is because a community is defined as the sum of all populations inhabiting a particular area. In this case, it includes the populations of different types of plants found in the Lick Creek bottom.
When considering the scope of ecological organization, an ecosystem would include not only these living components but also the abiotic factors, such as soil, water, and climate. A population, on the other hand, refers to individuals of the same species in an area, and landscape is a broader term that could encompass multiple ecosystems.