Final answer:
The claims regarding strep throat, colds, flu-like illnesses, and the importance of hand washing are valid based on the information provided.
Step-by-step explanation:
The claims in the texts are as follows:
- Strep throat, colds, and other flu-like illnesses are going around.
- Many students are having to miss several days of school.
- Washing your hands several times a day is very important.
- If you do not, you are at a higher risk of getting sick.
These claims can be classified as valid based on the information provided. Strep throat, colds, and flu-like illnesses are common and can spread easily among students, leading to missed school days. Washing hands frequently is indeed important as it helps to prevent the transmission of pathogens and lowers the risk of getting sick.