The correct option is B Fire
Fire used to keep off wild animal by early people.Natural fires caused overwhelmingly by lightning are highly evident on many landscapes. Birds such as hawks, and some other predators, are alert to opportunities to catch animals including invertebrates disturbed by such fires and similar benefits are likely to underlie the first human involvements with fires. Early humans were certainly familiar with the heat of the sun. They must have observed lightning flashes. The human control of fire likely required a cognitive ability to conceptualize the idea of fire.