What is the semicolon doing in this sentence?

I haven’t decided what I want to do this weekend; I’d like to go to my friend’s barbecue, but there is also a cherry picking festival happening in Lancaster.

(1 point)
Responses

It's separating items in a complex list.
It's separating items in a complex list.

It’s uniting two closely connected clauses.
It’s uniting two closely connected clauses.

It's uniting two closely connected clauses.

It's uniting two closely connected clauses.