Correct Option: B

The seven degr ees of Intervention for Architectural Conservation are as follows:
1. Prevention of deterioration or Nonintervention:
In some circumstances, assessment may show that any intervention is undesirable. This form of intervention attempts to prolong the life of heritage by removing the external causes of decay.
2. Preservation of the existing fabric or Maintenance :
A place of cultur al heritage value should be maintained regularly and according to a plan. This form of intervention is limited to the protection and maintenance without distorting its cultural significance.
3. Consolidation and Stabilisation of the fabric:
Places of cultural her it age value should be protected from collapse or processes of decay and deterioration. Consolidation or stabilisation is carried out, in order to prevent further collapse or decay or deterioration.
4. Repair and Restoration :
The rest or ation process typically involves repairing the damaged fabric and materials to return to the previous form. It may involve reassembly and may involve the removal of accretions. Restoration should be based on respect for existing material and techniques. 5. Reproduction:
Reproduction is partial reconstruction of vanished parts based upon evidence using new materials through replication (usually limited to repetitive elements or parts of buildings, such as balusters, etc.). t should be taken up only when considerable amount of evidence.
6. Reconstruction :
Reconstruction is recreating the original form/style of vanished parts using any material - by reusing old materials or by using new materials and techniques, but with compositions and construction similar to the original and based on the same.
7. Re-use or Adaptation or rehabilitation of H istoric buildings :
Adaptation or Rehabilitation means modifying a historic place to suit it a new compatible use, involving the least possible loss of cultural heritage value. This is predominantly applied in cases of revitalisation of heritage zones or areas.