Widely spaced contour lines indicate a a. steep slope c. hill b. gentle slope d. river

The right option is; b. gentle slope  

Widely spaced contour lines indicate a gentle slope .

A contour line is a line that connects points of the same height (elevation) above a specific level. Contour lines are drawn on topographical maps to indicate the elevation of a land along the line. Based on the elevation changes of a land, contour lines may be widely spaced which indicate a gentle slope or it may be packed closely together which indicate steep slopes.

not sure if this is what you'r looking for nnew= nold