A) humans preferred only long necked ones
B) of stretching of necks over many generations by short necked ones
C) nature selected only long necked ones
D) short necks suddenly changed into long necks
Correct Answer: B
Solution :
According to Lamarckism long neck and high fore limbs of Giraffe developed due to their stretching for obtaining foliage (leaves etc.) from trees when ground vegetation became sparse.
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