Which of the following is a typical effect of chlorine exposure?

C is the correct choice because exposure to chlorine can cause a number of adverse health effects, including eye irritation. Chlorine gas, when inhaled or when it comes into contact with the eyes, can lead to discomfort and symptoms such as redness, burning, and tearing. This is particularly relevant in contexts where chlorine is used for disinfection in water treatment or swimming pools, where it can be released as a gas or part of chlorinated water.

The other options, while intriguing in different contexts, do not align with the recognized effects of chlorine exposure. For example, enhanced cognitive function and improved respiratory health are not associated with chlorine exposure; rather, chlorine is known to irritate the respiratory system, leading to issues such as coughing or shortness of breath. Likewise, increased physical strength is unrelated to the properties of chlorine and does not stem from exposure to this chemical. Thus, the clear acknowledgment of eye irritation as a typical effect underscores the need for proper handling and awareness of chlorine in various applications.