Could be false. The stimulus tells us Regis sold more new cars last year than it did in any previous year, and that last year most of the new cars sold were to Blomenville residents. But it's possible that in some year before the last year, Regis sold even more new cars to Blomenville residents. For example, maybe it sold 60% of 100 new cars to Blomenville residents last year, but 90% of 90 new cars to Blomenville residents in the year before the last year.

Could be false. The stimulus does not give us any information about the number of cars Blomenville residents purchased in other years. It is possible that residents purchased more new cars in previous years compared to last year.

Could be false. Regis could have sold the most new cars to residents of Blomenville even if most of the new cars purchased by Blomenville residents were from other companies. Regis could have sold, for example, 40% of Blomenville's new cars, and the manufacturer that sold the next most cars to Blomenville residents sold only 30% of Blomenville's new cars, and the next most after that sold 20%, then the next most sold 10%. In other words, Regis could have sold a plurality of Blomenville residents' new cars, even if it didn't sell a majority.

Must be true. If most new cars that Blomenville residents purchased were not from Regis Motors, and most new cars sold by Regis were purchased by Blomenville residents, then it must be true that the total number of new cars purchased by residents is greater than the total number of cars sold by Regis. For example, let's say Regis sold 9 new cars total. At a minimum, 5 out of those 9 were purchased by Blomenville residents. If most of the new cars purchased by Blomenville were from other companies, then that means at least 6 new cars purchased by Blomenville must come from a company other than Regis. Adding the 5 new cars from Regis plus at least 6 from other companies results in 11 new cars purchased by Blomenville residents.

Could be false. The stimulus does not give us any information about Regis Motor’s market share in Blomenville in the year before the last year. So we can't infer whether the market share last year was larger than it was the year before the last year.