Weight equals mass times gravitational field strength Steps:

• Recall formula: weight $W = m \times g$, where $m$ is mass in kg and $g$ is gravitational field strength in N kg$^{-1}$.
• Calculate for A: $3.0 \times 9.5 = 28.5$ N.
• Calculate for B: $4.0 \times 10.2 = 40.8$ N.
• Calculate for D: $4.5 \times 9.0 = 40.5$ N; option C lacks data, so not enough information to compute its weight.

Why C is correct:

• Not enough information; cannot confirm without mass and $g$ values for C.

Why the others are wrong:

• A: Lowest weight at 28.5 N.
• B: Weight 40.8 N, but D is close at 40.5 N; C undetermined.
• D: Weight 40.5 N, less than B's 40.8 N.

Final answer: Not enough information.