Which of the following describes how pests might be repelled through companion planting?

Companion planting is a method used in gardening and agriculture where certain plants are grown together for mutual benefit. One of the key ways that pests can be repelled through this strategy is by creating an inhospitable environment for them.

Certain companion plants can release substances into the soil or air that deter pests. For example, some plants may emit specific odors or chemicals that are unappealing to certain insect pests or that can disrupt their life cycles. This means that the arrangement and combination of various plants can support the health of crops by making the environment less favorable for harmful insects.

The other methods mentioned, such as using chemical repellants or masking scents, might play a role in pest management but do not directly illustrate the fundamental concept behind companion planting. Companion planting emphasizes natural interactions and the relationships between different plant species, while also promoting a more holistic approach to pest control by enhancing the overall ecosystem.