B. 13 units
to calculate the distance use the ' distance formula '
for points (-6 , 5) and (- 1 , - 7)
d =√(- 1 +6)² + (- 7 - 5)² = √(25 + 144) = √169 = 13
Distance = √[( -1+ 6))^2 + (−7−5)^2]
= √(25 + 144)
=√169
= 13
Answer
C) 13 units
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