a variety

[Allen165]

A sentence from an article that ran in the Harvard Law Review:

"Yet, there are a variety of relationships within our legal system that are relevant to statutory and constitutional interpretation."

Why "are" instead of "is"?

Thanks.

[Atchan]

A sentence from an article that ran in the Harvard Law Review:

"Yet, there are a variety of relationships within our legal system that are relevant to statutory and constitutional interpretation."

Why "are" instead of "is"?

Thanks.

** Not A Teacher **
I think because "variety of relationships" is Plural.

[Allen165]

** Not A Teacher **
I think because "variety of relationships" is Plural.

But the plural of "variety" is "varieties." Is "There is a variety of relationships...." wrong?

Thanks.