What is the meaning of the term 'intolerable'?

The term 'intolerable' means something that is unbearable or cannot be tolerated. It describes a situation, condition, or behavior that is extreme or unacceptable to the point where it causes distress or difficulty. This aligns precisely with the provided choice of 'unbearable,' as both terms convey a sense of severity and a lack of tolerance for a particular circumstance.

In contrast, the other choices offer meanings that are contrary to the concept of 'intolerable.' For instance, 'acceptable,' 'comfortable,' and 'manageable' suggest situations that can be endured or handled, which directly opposes the severity implied by 'intolerable.' Thus, understanding the meaning of 'intolerable' as something that cannot be endured helps clarify why 'unbearable' is the correct answer.