Spelling selection — Choose the correctly spelled timetable and calendar term: identify the standard spelling of "Schedule" used in business and academic English.

Given data

• Everyday planning word.
• Options: Schedulle; Schedeule; Schdule; Schedule

Concept/Approach
Standard spelling retains "sch" + "ed" + "ule" without doubled "l" or extra vowels.

Step-by-step reasoning
Schedule — correct: "sche-dule".Schedulle — incorrect double "l".Schedeule — extra "e" after "d".Schdule — missing vowel "e".

Verification/Alternative
Dictionaries show "schedule" as the accepted spelling in both British and American English.

Common pitfalls
Adding letters due to pronunciation differences (British /ˈʃedjuːl/ vs American /ˈskedʒuːl/).

Final Answer
Correct spelling: Schedule.