निम्नलिखित में से कौन सा एक प्रकार का व्यक्तिगत/पृथक अनुबंध (separated contract) नहीं है?

The amount of deposit paid by the bidder at the time of submitting a tender is called:

The contract system through which minor maintenance works are executed within a specific period of contract is termed as:

Under what circumstances are public tenders typically invited by government authorities or organisations?