Question

How is this sentence correctly punctuated using commas?

Answer 1

Zachary struggles to pick up the heavy, bulky box.

Answer 2

Zachary struggled, to pick up the heavy, bulky box.

Zachary struggled to pick up the heavy, bulky, box.

Zachary, struggled to pick up the heavy bulky box.

Zachary struggled to pick up the heavy, bulky box.