Upon reviewing the statements: I. "No virus can survive in _____ waters." - This statement is incorrect. Viruses can survive in water, although their survival is influenced by factors such as temperature, salinity, and the presence of microplastics. Some viruses can survive in freshwater and even in saltwater under certain conditions. II. "No virus can infect bacteria." - This statement is incorrect. Viruses can indeed infect bacteria. These viruses are known as bacteriophages, which specifically target and infect bacterial cells. III. "No virus can change the cellular transcriptional activity in host cells." - This statement is incorrect. Viruses can alter the transcriptional activity of host cells. They can manipulate host cell transcription factors and reprogram host cell metabolism to facilitate their replication and survival. Therefore, none of the statements are correct, making the correct option 1, as zero statements are correct.