The word "incredible" in the passage means "A) unbelievable."
In the passage, the word "incredible" is used to describe the amount of energy that hummingbirds need to sustain their body metabolism. The context suggests that hummingbirds have an extraordinarily high metabolism, which is hard to believe or difficult to imagine for most people. Therefore, "incredible" is used in the sense of "unbelievable" or "hard to believe" to emphasize the remarkable and surprising nature of the hummingbird's energy requirements.
the complete Question is given below:
As the rulers of the planet, humans like to think that it is the large creatures who will emerge victorious from the struggle for survival. However, nature teaches us the opposite : it is often the smallest species which are the toughest and most adaptable. A perfect example is the hummingbird, which is found in the Americas. One species of hummingbird known as the bee hummingbird ranks as the world’s smallest and lightest bird and it is barely visible when it is in flight. Hummingbirds are the only birds that can fly backwards. They feed mainly on the nectar of flowers, a liquid that is rich in energy. Nectar is an ideal food source, for hummingbirds need an incredible amount of energy to sustain their body metabolism. A hummingbird’s wings flap at a rate of about 80 times per second and its tiny heart beats more than 1000 times per minute. This is why they must consume relatively large quantities of food. In the course of a day, a hummingbird consumes about half its body weight in nectar.
The word incredible in the passage means
A) unbelievable
B) phenomenal
C) tremendous
D) inexhaustible