Four runners, A, B, C and D, participated in the 100 meter final. There are only four runways: 1, 2, 3 and 4, and the runners decide their running amount by drawing lots at random.

Test analysis: according to the solution of probability, find two points: ① the total number of all possible situations; ② Number of eligible cases; The ratio of the two is the probability of its occurrence. Therefore,

∫ 1, 2, 3 and 4 runways, only 1 was drawn by A.

∴a The probability of reaching the runway 1 is:

So choose D.