The correct answer is option (a), which places the treaties in the following chronological order: Treaty of Amritsar, Treaty of Seringapatam, Treaty of Bassein, and Treaty of Salbai.

The Treaty of Amritsar is an 1809 treaty signed between the British East India Company and the Sikh Empire. It ended the Anglo-Sikh Wars and established the boundaries of the Sikh Empire.

The Treaty of Seringapatam was signed in 1792 between Tipu Sultan, the ruler of the Kingdom of Mysore, and the British East India Company. This treaty ended the Third Anglo-Mysore War and led to the cession of territories by Tipu Sultan to the British.

The Treaty of Bassein was signed in 1802 between the British East India Company and the Maratha Empire. It was a subsidiary alliance whereby the Marathas accepted British protection and control over their foreign affairs.

The Treaty of Salbai was signed in 1782 between the Marathas and the British East India Company. It ended the First Anglo-Maratha War and established peace between the two parties.

Overall, the correct chronological order of these treaties is Treaty of Amritsar, Treaty of Seringapatam, Treaty of Bassein,