(a) Through a given point, only one straight line can be drawn.
(b) Through two given point, it is possible to draw one and only one straight line.
(c) Two straight lines can intersect only at one point.
(d) A line segment can intersect only at one point.
Answer: (a) Through a given point, only one straight line can be drawn.
Because we can draw infinitely many straight lines through a given point.