A soldier has been back from Iraq for two weeks. He is being seen in the outpatient mental health clinic due to complaints of inability to sleep, nightmares, and flashbacks. The nurse would expect the client to be diagnosed with which of the following?

A. Chemical agents: Chemical agents (e.g., tobacco smoke, asbestos) are significant carcinogens but are not the most influential across all types of cancer.

B. Environmental factors: Environmental factors, including exposure to radiation, chemicals, and lifestyle choices, have a broad impact on cancer development. This is the most comprehensive factor, as it encompasses various elements that contribute to cancer risk.

C. Viruses: Certain viruses (e.g., HPV, Hepatitis B) are linked to specific cancers, but they are not the primary cause of most cancers.

D. Defective genes: Genetic mutations play a critical role in cancer development, but they are often triggered by environmental factors, making environmental factors the most significant overall.

A. Comprehend spoken words: This is part of global aphasia, but it does not fully encompass the deficits associated with this condition. Global aphasia involves more extensive language impairment.

B. Form words that are understandable: This is part of global aphasia, but it alone does not fully capture the severity of the language deficit, as it also includes comprehension issues.

C. Form words that are understandable or comprehend spoken words: Global aphasia is the most severe form of aphasia, characterized by profound impairment in both the ability to produce understandable speech and comprehend spoken language. This choice accurately reflects the full scope of the language deficits in global aphasia.

D. Speak at all: Clients with global aphasia may still attempt to speak, but their speech is typically not understandable and is often meaningless. Therefore, saying they cannot "speak at all" is not entirely accurate.