11. The function of the first paragraph in relation to the
passage as a whole is to:
A. orient the reader to the subject of longitude by
explaining how longitude is determined at sea.
B. explain the political significance of developing an
accurate way of determining longitude.
C. establish that longitude calculations are necessary
to determine time in two different places at once.
D. introduce a discussion of how knowledge of Earth’s
position relative to the Sun was gained in the
process of advances in timekeeping.