What is the problem in Petrarch's Sonnet 90?

Question:

Petrarch:

Francesco Petrarch, generally referred to as Petrarch, was an Italian poet and scholar of the fourteenth century, a proponent of the philosophy of humanism. He wrote many sonnets over his lifetime, creating the sonnet form now known as a petrarchan sonnet. This writer was also a part of the movement in Medieval Europe to write in the vernacular languages spoken by the people rather than in Latin.

Answer and Explanation: