True or False: An insecticide that is effective against a wide variety of insects is known as a broad spectrum insecticide.

A broad spectrum insecticide is specifically designed to target a wide range of insect species. This means that when such an insecticide is applied, it can effectively control multiple types of insects rather than being limited to a single species or a narrow group of pests. The term "broad spectrum" indicates its ability to affect various insects in different stages of their life cycle, which is particularly useful in situations where multiple pest species are present.

The effectiveness of a broad spectrum insecticide is beneficial in agricultural settings, home gardens, or other areas where diverse insect populations can pose threats to crops or plants. However, while broad spectrum insecticides are effective, they may also impact beneficial insects, which is an important consideration for pest management practices.

The other options suggest conditions that complicate the definition or scope of broad spectrum insecticides, but the clear and accepted definition remains that such insecticides are effective against a wide variety of insects.