Question

Choose the option that best fills in the blank to complete the sentence logically and correctly:
The instructor added the restriction that all projects had to be__________ no student could research an area that had been investigated previously by anyone else.
A. Acceptable
B. Useful
C. Extensive
D. Original

Answer 1

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Complete answer:
'Acceptable' means 'moderately decent or satisfactory' as choice A. 'Useful' means 'something that is of good uses or function.' Choice B: Choice C:' Extensive' means 'huge in quantity or size'. Option D: 'Original' means 'made by someone' personally.
'Original' is the most important of these terms because it completes the sentence in meaning: the teacher added the constraint that the projects should be created by the students individually, and no student should examine something that someone else had already touched on (making it unoriginal). Option D is therefore right. The other terms,' appropriate',' useful' and 'extensive' do not fill in the meaning of the expression. Options A, B and C are also incorrect.

Additional Information:
The most abundant forms of lakes in the global ecosystem are small lakes and ponds. They provide a myriad of ecosystems and social services as well as products and resources, while at the same time being of great conservation benefit (for migratory birds, for example). These shallow systems typically occur in lowland regions, many of which are associated with seasonal changes in river flood regimes. Geological disturbances, such as glacial movements or other processes that create depressions in the landscape, may also be related to the origin of many of these structures. In addition, after centuries of landscape alteration, many shallow lakes and ponds have been created by humans, such as stream and river impoundment or diversion, or when digging for metals, sand , gravel and peat (particularly common in Europe in Medieval times) or by creating fish ponds.

Hence the correct answer is option ‘D’

Note: Try to understand the meaning of the word given, and look at the options given. Differentiate as they have a difference in context between each of the choices. Choose the most suitable choice, i.e. the choice nearest to the given word in terms of context.