Final answer:
The backstroke position is the recommended position to adopt in cold waters when you cannot get out of the water and the shore is too far, as it helps you conserve energy and stay afloat.
Step-by-step explanation:
In cold waters, if you cannot get out of the water and the shore is too far, the backstroke position is the recommended position to adopt. This position involves lying on your back and using a modified backstroke technique to kick your legs and propel yourself forward. It allows you to conserve energy and stay afloat while reducing heat loss from the body.