This is the 252nd most frequent Polish word.
widać
"To be seen" or "it is visible."
Here, 'widać' is used to indicate the visibility or the ability to see something clearly, e.g., the snow on the mountains.
Gdy spojrzysz na odległe góry, widać na nich śnieg.
When you look at the distant mountains, you can see snow on them.
In this sentence, 'widać' denotes perceptible evidence or an obvious observation about Maria's effort.
Widać, że Maria bardzo się stara, aby wszystko było idealne.
It can be seen that Maria is trying very hard to make everything perfect.
'Widać' here expresses the idea of apparent or visible effort in completing a task.