Respuesta :
Answer: The answer is C.
Step-by-step explanation: The triangle inequality theorem states that the two shortest sides when added must be larger than the largest side. Therefore, A is wrong because 4+5 < 10, B is wrong because 5 + 7 < 13, D is wrong because 4 + 5 < 10, but C is correct because 7 + 3 > 9.