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Biosystematics aims at

1. identification and arrangement of organisms on the basis of their cytological characteristics
2. the classification of organisms based on broad morphological characters
3. delimiting various taxa of organisms and establishing their relationships
4. the classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies

Correct answer: the classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies

Solution

Biosystematics is concerned with classifying organisms using a wide range of evidence to infer evolutionary relationships and phylogeny. That makes the option based on evolutionary history and total evidence from multiple fields the correct one.

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