Which of the following is an essential quality for a security guard?

Strong observation skills are an essential quality for a security guard because they enable the guard to effectively monitor their environment and identify any potential threats or suspicious activities. Being attentive to details ensures that security personnel can detect unusual behavior, recognize security breaches, and respond appropriately to prevent incidents. This quality is crucial for the safety and security of both the location being monitored and the people within it.

The other options highlight qualities that would hinder a security guard's ability to perform their job effectively. Inflexibility in procedures would limit their ability to adapt to unforeseen circumstances; lack of communication skills would impair their ability to report incidents or convey essential information to others, and the inability to work in teams would compromise coordination with other security personnel or emergency responders. Therefore, strong observation skills stand out as vital for a security guard's success in maintaining safety and security.