Step 1: Understanding the clues.
The words importance, light, paper, and gravity can all pair with “weight”: weight of importance, lightweight, paperweight, and gravity weight (weight due to gravity). These phrases are meaningful and commonly recognized.
Step 2: Evaluate each option.
(A) Mass – Works with gravity but not with the other clues.
(B) Weight – Matches all four clues.
(C) Density – Matches none directly.
(D) Length – Not related to any clue.
(E) Mathematics – Does not form correct word pairs.
Step 3: Conclusion.
“Weight” is the only word that forms meaningful expressions with all clues.