Sentence given in each question, when properly sequenced, from a coherent paragraph. The first and last sentences are 1 and 6, and the four in between are labelled A, B, C and D. Choose the most logical order of these four sentences for among the four given choices to construct a coherent paragraph from sentences 1 to 6.
1) Commercially reared chicken can be unusually aggressive, and are often kept in darkened sheds to prevent them pecking at each other.
A. The birds spent far more of their time—up to a third — pecking at the inanimate objects in the pens, in contrast to birds in other pens which spend a lot of time attacking others.
B. In low light conditions, they behave less belligerently, but are more prone to ophthalmic disorders and respiratory problem.
C. In an experiment, aggressive head-pecking was all but eliminated among birds in the enriched environment
D. Altering the birds’ environment, by adding bales of wood-shavings to their pens, can work wonders.
6) Bales could diminish aggressiveness and reduce injuries; they might even improve productivity, since a happy chicken is a productive chicken.
The first sentence talks about how commercially reared chicken are usually aggressive and hence are kept in darkened sheds to prevent them from pecking at each other. This is because, in low-light conditions, they behave less aggressively - this idea is mentioned in sentence B. However, altering the environment in which the birds live, like adding bales of wood-shavings can work wonders and prevent the birds from pecking each other. This is proved with the help of an experiment in which birds in the enriched environment spent far less time pecking each other, instead preferring to peck inanimate objects in their pens. So, the correct order of sentences is 1-B-D-C-A-2.
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