Answer:
 c.  101 cm²
Step-by-step explanation:
The ratio of areas is the square of the ratio of linear dimensions, such as height. The area of the larger ΔDEF is (13/5)² times that of the smaller ΔABC.
 Area DEF = (13/5)²×(15 cm²) = 101.4 cm² ≈ 101 cm² . . . . matches choice C