Multiple choice softskills communication The two teams will be working on this ________ parallelly in parallel on parallel both 1 & 2 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The correct phrase is 'in parallel'. 'Parallelly' is rarely used and sounds unnatural. 'On parallel' is incorrect usage. 'Both 1 & 2' is wrong because only 'in parallel' is standard English.