While filling the tender for any work, the contractor considers A. Site survey B. Availability of construction materials C. Availability of labour D. All the above

The correct answer is D. All the above.

A contractor must consider all of the following when filling a tender for any work:

• Site survey: The contractor must visit the site of the work to assess the conditions and make sure that it is feasible to complete the work.
• Availability of construction materials: The contractor must make sure that they can obtain the necessary construction materials at a reasonable price.
• Availability of labour: The contractor must make sure that they can hire enough workers to complete the work on time and within budget.

If the contractor does not consider all of these factors, they may not be able to complete the work successfully.