Respuesta :
'C'
The reason it is C is because the poem never mentions a book, and generations of swans will usually help measure time. (Unless you look at a clock like normal people.)
The reason it is C is because the poem never mentions a book, and generations of swans will usually help measure time. (Unless you look at a clock like normal people.)
He counts how many young swans are added to the numbers at the lake.