If an organism has a high biological fitness in one environment ,does that mean that it would also have high biological fitness un environment

The answer is NO. This is because different environments require different adaptations. A desirable trait in one environment may be inconsequential or detrimental in another environment. This is the reason also why evolution is continuous as natural selection acts on traits of a population to ensure desirable traits are retained with changes in the environment in a dynamic world.

the answer is d. chordata