Pls help me answer it and explain it. Thank you, tutors.

1. Discuss the indivisibility of pledge and mortgage.

2. Donna borrowed PhP20,000.00 from Carmen payable on August 31, 2021. The obligation is secured by a pledge of Donna's wrist watch. On September 15, 2021, Donna paid PhP15,000.00 to Carmen, leaving a balance of Php5,000.00. The balance remains unpaid up to the present. Donna demanded the return of her wrist watch.

Is Donna entitled to the return of the same? Explain your answer.

3. Jose obtained a loan from Pedro amounting to PhP1 Million. As a security, Jose mortgaged his land (with a fair market value of PhP700,000.00) to Pedro. Subsequently, Jose sold the land to Mario.

What is the effect of the sale of the land to the obligation of Jose to Pedro?

Assuming Jose could not pay his obligation, what are the remedies of Pedro?

Explain your answer.