What is the primary purpose of the couplet in this sonnet?
Where art thou, Muse, that thou forget'st so long
To speak of that which gives thee all thy might?
Spend'st thou thy fury on some worthless song,
Darkening thy power to lend base subjects light?
Return, forgetful Muse, and straight redeem
In gentle numbers time so idly spent;
Sing to the ear that doth thy lays esteem
And gives thy pen both skill and argument.
Rise, restive Muse, my love's sweet face survey,
If Time have any wrinkle graven there;
If any, be a satire to decay,
And make Time's spoils despised every where.
Give my love fame faster than Time wastes life;
So thou prevent'st his scythe and crooked knife.
- "Sonnet 100,
William Shakespeare
The purpose is to show the poet's belief in a grim
reaper who wields a scythe.
The purpose is to complete the 14 lines required to
make the poem a sonnet.
The purpose is to add a twist to the ideas about
time described in the three quatrains
The purpose is to inspire a poem that will help the
speaker's beloved become famous and live forever.

The answer