[Grammar] A wide range of evidence shows that ... <- what is a subject in this sentence?

[wotcha]

A wide range of evidence shows that contact with nature enhances children's education, personal and social skills.


What is a subject in this sentence between range and evidence?

 

[Rover_KE]

If you are forced to pick a single word as the subject, it has to be 'evidence'.

The sentence would make sense without 'A wide range of' but not without 'of evidence'.

Rover

 

[5jj]

If you are forced to pick a single word as the subject, it has to be 'evidence'.

The sentence would make sense without 'A wide range of' but not without 'evidence'.

I don't agree. I think that the grammatical subject of the verb is 'range'.