Final answer:
Boys are generally more susceptible than girls to many childhood diseases, often due to genetic and immune system factors.
Step-by-step explanation:
The statement that boys are more susceptible than girls to a large number of childhood diseases is generally considered True. This is due to a combination of biological and genetic factors, such as the presence of only one X chromosome in males, which may make them more vulnerable to certain X-linked diseases. Issues related to immune system development can also contribute to this increased susceptibility in boys. However, susceptibility can also depend on the specific disease in question and various environmental factors.