Explanation:

- Handwriting can be proved in court in several ways:

- By calling an expert: An expert in handwriting analysis can compare signatures or writings and give their opinion.

- By examining a person acquainted with the handwriting: Someone familiar with the author's handwriting (like a friend or colleague) can confirm if the writing is genuine.

- By comparison of admitted and disputed handwritings: The judge or expert can compare a sample known to be genuine with the disputed one to spot similarities or differences.

- Option 4: all the above is correct because all these methods are legally recognized ways to prove handwriting.