Which sentence has an unclear pronoun reference

What is the value of x in the equation? 43 7 x − 31 2 = 12 a) 32 5 b) 31 2 c) 33 4 d) 36 7

3. how could the following sentence be rewritten as an exclamatory sentence? how dangerous was the saber-toothed tiger? a. tell someone how dangerous the saber-toothed tiger was. b. the saber-toothed tiger was dangerous. c. the saber-toothed tiger was dangerous! d. no change is necessary. c. the saber-toothed tiger was dangerous!

Reread lines 6-7 "the survivor." determine how the tone of these differs from the preceding lines (1-5)