Which of the following is an effective way to prevent mosquito bites?

Wearing long sleeves and using repellent is an effective way to prevent mosquito bites for several reasons. Long sleeves provide a physical barrier that can help keep mosquitoes from reaching your skin, significantly reducing the number of bites you receive. Repellents, particularly those containing DEET or other EPA-approved ingredients, are scientifically proven to deter mosquitoes, making it less likely that they will land on or bite you.

Combining both strategies maximizes protection against mosquitoes, especially in areas where they are prevalent. This approach is particularly beneficial during peak mosquito activity times, such as dawn and dusk, or in environments where mosquitoes breed.

Other options, such as using sunscreen, while helpful for protecting your skin from UV radiation, do not offer any protection against mosquitoes unless they contain repellent properties. Indoor fans can help create a breeze that may disrupt mosquitoes' ability to fly, but they are not a foolproof method for preventing bites, especially when outdoors. Ignoring outdoor activities altogether may avoid bites but is not practical or desirable for most people.