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Area of a circle is A=πr2A = \pi r^2. The diameter is 14 cm, so the radius r=14/2=7r = 14/2 = 7 cm. Compute r2=72=49r^2 = 7^2 = 49. Thus A=49πA = 49\pi. Using π≈3.14\pi \approx 3.14, A≈49×3.14=153.86 cm2A \approx 49 \times 3.14 = 153.86\ \text{cm}^2. Option A matches both exact and approximate forms. Option B incorrectly uses 14π14\pi, which is the circumference formula C=πdC = \pi d, not area. Option C corresponds to 2rπ2r\pi mixed with an error; not an area expression. Option D multiplies diameter by area factor incorrectly (98π98\pi would be 2×49π2 \times 49\pi, double-counting). On the GED, identify whether the problem asks for area (πr2\pi r^2) or circumference (2πr2\pi r or πd\pi d). Convert diameter to radius before squaring, and keep units as square units for area. A quick reasonableness check: if radius is 7, area should be around 3×49≈1473 \times 49 \approx 147; 153.86 is close, confirming the calculation.