A play that deals with an issue of serious and lasting significance in humanity's spiritual or intellectual life beyond the mere attempt to imitate profundity is said to possess credibility. gravity. pertinence. stageability.

Gravity.

Explanation:

As per the given description, 'gravity' is the characteristic that needs to be possessed by a play dealing with the 'concerns of serious and abiding significance in human's intellectual as well as spiritual life ahead of the attempt to copy the acuity.' 'Gravity' implies the 'alarming significance or seriousness' which is required to displayed while offering a play that aims to portray the serious issues as it helps in providing an atmosphere to the audience through which they can connect and understand the 'gravity' of the situation and elicit an intended response.