En qué año y país se construyó la 1ª pista de atletismo?

In them the test called stadion stood out  , which was a pedestrian race of 197.27 meters, equivalent to 200 times the foot of Heracles,  this is the oldest test  of which there is record. Shortly afterwards they appeared more tests, such as double  stadion  or  duálico , Stayers race or  horse racing  and career background or  dolicho . All of these tests are multiples of the distance from the  stadion.

Apart from the  Olympic Games , there were other sporting events in different Greek polis, which were overshadowed by the former. No fewer than 38  Greek cities  held their own Olympic games (called  Isolympics  to differentiate them from those held at  Olympia ) and 33 held  Pythic Games .

                              Hoped I helped a lil bit <3

so we know the answer cannot be c because no insect or animal starts as an adult

the answer is a. a swimming larvae

because since they are sea animals they automatticaly have to know how to swim they cannot just sink to the bottom

sorry if this is the incorrect answer.