Choose the option displaying correct spelling of the word _______ experiments are being conducted in Rome Paris and London

The correct spelling is "parallel" making option C correct. Other options are misspellings. Proper spelling ensures clarity especially in formal writing or scientific reports. This skill is vital for professional communication. Accurate spelling enhances credibility in documents or presentations particularly in academic or technical contexts where precise language ensures clear and professional communication avoiding errors that could distract or confuse readers in various settings.