Final answer:
The correct answer is 'lower'. Abbreviated, it is the comparative form of 'low', used when comparing two things. 'Lowest' and 'low' don't fit in this context.
Step-by-step explanation:
The correct answer to the sentence is 'lower'. The sentence, 'The height of this file cabinet is lower than the one in your office', uses a comparative adjective. When comparing two things in English, the comparative form of most adjectives is used by adding -er or using the word 'more'.
However, not all adjectives follow this rule. 'Low' is an example of an adjective that uses -er to make the comparative form rather than using 'more'. Therefore, 'lower' is the correct answer, not 'more low'.
The adjectives 'lowest' and 'low' do not make sense in this context because we are comparing only two things. 'Lowest' would be used when comparing more than two things, and 'low' is the base form of the adjective, not a comparative form.
Learn more about Comparative Adjectives