Who wants free points and free brainliest if you solve this riddle. Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

I beleive it is a shadow.

Explanation:

Is it a shadow?

Explanation: This makes most sense here as it is one color but changes shape, and flying is the stretching of a shadow. Its also only in the sun but not in rain, and it does no harm and doesn't feel pain because its a shadow. (Maybe?)

b. they require a huge investment of time, dedication ,training, and patience almost from the day they are born.

explanation:

the sentence gives a clear evidence of how carefully the sar dogs are selected and also specify from what time this exercise begins."almost from the day they are are born." this sentence shows as that this exercise begins early.

if you need any clarification or more explanation pls do mention in the comment section.

      hope this and if it does pls mark as branliest answer thx