Select the INCORRECTLY spelt word.

Correct option is D

The incorrectly spelled word is "Fundementel". The correct spelling is "Fundamental", which means forming the base or core of something, essential. (Hindi meaning: मौलिक, बुनियादी).
Example: Education is a fundamental right of every child.
Meanings of other given words:
· Detrimental – Causing harm or damage. (Hindi meaning: हानिकारक)
· Transcendental – Going beyond normal human experience. (Hindi meaning: अधिभौतिक, परात्पर)
· Regimental – Relating to a regiment or disciplined order. (Hindi meaning: सैन्य टुकड़ी से संबंधित)
Thus, the correct spelling is "Fundamental", making "Fundementel" incorrect.