Read the passage given below and fill in the blanks by choosing the most appropriate options from the ones that follow: Alaska's size and climate make transportation (a) - challenge. Long ago, sledges pulled (b) - dog teams were the best way to travel (c) - native people. (a) (i) an (ii) the (iii) a (iv) for (b) by (ii) with (iii) of (iv) beside (c) (i) by (ii) to (iii) for liv) with