Final answer:
The need for further instruction is indicated by the statement 'It is most common in humid weather' regarding impetigo, a contagious skin infection that can be caused by bacteria.
Step-by-step explanation:
The correct answer is B. 'It is most common in humid weather.'
Impetigo is a contagious skin infection that can be caused by bacteria such as Staphylococcus aureus and Streptococcus pyogenes. It is not specifically associated with humid weather, so statement B indicates the need for further instruction.
Impetigo is characterized by the formation of vesicles, pustules, and bullae, often around the nose and mouth. It can also occur in other areas of broken skin, such as insect bites. The lesions may be itchy and can spread through direct skin contact or sharing contaminated objects like towels or clothes. Treatment typically involves topical or oral antibiotics.