In the following questions, sentences are given with a part in bold. The given phrase in bold may or may not contain an error. If phrase has error, one of the options following can replace the incorrect phrase. The correct phrase which replaces the erroneous phrase will be your answer. If the sentence is correct then select ‘No improvement required’ as your answer. Although the research team had spent several months collecting and analyzing data from various sources, the final report, which was expected to provide comprehensive insights, failed to address several key issues that were highlighted during the initial phase of the project.