The correct answer is option 3 i.e. Growth.From the first part of the analogy, it becomes clear that a noun is needed after its corresponding Verb. 'Build' is a verb and it is related to Building (noun) that means a roofed and walled structure built for permanent use (as for a dwelling) or the art or business of assembling materials into a structure. Similarly, Grow is also a verb and it is related to 'Growth' i.e. the process of growing.The rest of the options are verbs and are not an appropriate fit for our analogy.