Question

Choose the best transitions to complete the argument.

Year-round school has seen an increase in districts nationwide. Studies show,
, that more than 10 percent of students are now enrolled in year-round schools, an increase of 544 percent over the last 27 years.
, so many new districts are joining the year-round schedule that it is now considered a trend.
, schools should consider switching to the year-round schedule to keep up with the latest educational reforms.

Answer 1

in fact; indeed; therefore

(Studies show, in fact,... Indeed, so many... Therefore, schools should...)