According to Barbara Tuchman, what was sea travel like in Chaucer's day?
During media

The answer is focused on because it boils down to the fact means to focus on. 

  i think you forgot to put the options but if your reffering to this question then your answer will be "b"  a. add "to" to the base form to create an adjective.b. when the subject of a sentence is singular, add "–s" to the base form.c. add "–ed" to irregular base forms to form the past participle.d. do not use a base form with plural subjects