In each of the following questions, four words are highlighted in the given sentence. Identify the word that is incorrectly spelled. If all highlighted words are spelled correctly, select 'No error'.

The domestic industry would colapse under severe economic pressure.

The correct answer is colapse.

Let us analyze the spelling of each highlighted word in the sentence:
1. industry - Spelled correctly. It refers to economic activity concerned with the processing of raw materials and manufacture of goods.
2. colapse - Incorrectly spelled. The correct spelling is collapse (with a double 'l'), which means to fall down, fail, or cave in under pressure.
3. severe - Spelled correctly. It means very great, intense, or harsh.
4. pressure - Spelled correctly. It refers to continuous physical or psychological force/stress.

Therefore, the word colapse is the incorrectly spelled word among the options.