Read the following passage and decide which option A, B, C or D best fits each space:      

    These days in business, people have to face many challenging questions when designing and implementing new projects in undeveloped areas of the countryside. One issue which has to be faced is whether it is possible to introduce new technology without destroying the local environment.            Economic (51) __________and environmental conservation are often seen as natural enemies. It is unfortunate that in the past this has often been true, and it has been necessary to choose between (52) __________the project or protecting the environment. However, by taking environmental considerations (53) __________at an early stage in a project, companies can significantly reduce any impacts on local plants and animals.            For example, in southern Africa, a company called CEL was asked to put up 410 km of a power transmission line without disturbing the rare birds which inhabit that area. The project was carried out with (54) __________disturbance last summer. What may surprise many business people is the fact that this consideration for local wildlife did not in any way (55) __________down the project. Indeed, the necessary advance planning (56) __________with local knowledge and advanced technology, (57) __________that the project was actually completed ahead of schedule. CEL was contracted to finish the job by October and (58) __________to do so two months earlier.            CEL is one of those companies which is (59) __________ to the principle of environmental conservation. Many other companies have yet to be (60) __________ of the importance of balancing the needs of people with those of the environment. However, it may be the only realistic way forward.

 

          Economic (51) __________and environmental conservation are often seen as natural enemies.