Correct Answer: time

Solution : The second option is the correct choice.

The phrase take your time is a common expression in English, advising someone to proceed at a comfortable or unhurried pace. In the given sentence, the use of time fits naturally with the context of looking in a mirror and taking a measured approach with each step.

The meanings of the other options are as follows:

• Plague is a widespread affliction or calamity.
• Age refers to a long period of time.
• A hostage is a person seized or held as security against specified demands.

Therefore, the complete sentence should be: "Look in a mirror and take your time with each step."