Question

most bird species that are capable of flight weigh less than a kilogram (kg), which is not surprising considering the burden that extra body weight puts on a flying animal. but not all flying birds are so light, as we can see most clearly in the example of the
which choice most effectively uses data from the table to complete the example?
a mute swan, which has an average mass of 11.9 kg.
b andean condor, which has an average mass below 10 kg.
c somali ostrich, which has a higher average mass than the dwarf cassowary.
d somali ostrich, which has an average mass of 90.0 kg.

Explanation:

The table shows average masses and flight - ability status of different birds. We need to find the bird that fits the description of being a flying bird with a mass less than 1 kg. The mute swan and Andean condor have masses well above 1 kg and are not relevant. The Somali ostrich has a high mass and is flightless. The Andean condor with an average mass below 10 kg meets the criteria among the given options.

Answer:

B. Andean condor, which has an average mass below 10 kg.