Orthography Check — Select the correctly spelled common noun from variations (Occasion, Occassion, Ocasion, Ocassion) and outline the rule about double consonants.

Given data

• Word family: occasion (event/time).
• Options: Occasion, Occassion, Ocasion, Ocassion.

Concept/Approach
Standard spelling uses double ‘‘c’’ but a single ‘‘s’’: occasion.

Option-by-option analysis
Occasion — correct: ‘‘occa + sion’’ with single ‘‘s’’. ✅Occassion — wrong double ‘‘s’’; incorrect.Ocasion — missing one ‘‘c’’; incorrect.Ocassion — missing one ‘‘c’’ and doubling ‘‘s’’; incorrect.

Common pitfalls
Learners often double the ‘‘s’’ by analogy with words like ‘‘possession’’—but the correct ending here is ‘‘-sion’’ with a single ‘‘s’’.

Final Answer
Occasion