Answer: Malaria was common in marshy areas where mosquitoes bred
Step-by-step explanation:
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An objective summary refers to the summary that vsb be gotten from the information in a text or passage. It should be noted that an objective summary duesbt contain opinions or judgements.
Objective summary helps the reader to understand the texts read and also identify the vital informations in the text. Here, the objective summary is that "Malaria was common in marshy areas where mosquitoes bred".