DDT adversely affects our environment because:

it can kill beneficial insects like honey bees

The correct answer is Option (1) - it can kill beneficial insects like honey bees

DDT (Dichlorodiphenyltrichloroethane) adversely affects the environment because it can kill beneficial insects like honey bees. Honey bees play a crucial role in pollination and maintaining ecosystems, so their loss can have significant ecological consequences, affecting plant reproduction and biodiversity. Additionally, DDT can also harm other non-target organisms and accumulate in the food chain, posing risks to wildlife and potentially to human health.