To make a positive identification with the help of a paial finger print, the points of similarity should be at least :

**Core Concept**
The question pertains to the principles of fingerprint identification, which is a crucial aspect of forensic science. In fingerprint analysis, a minimum number of points of similarity is required to establish a positive identification. This is based on the unique patterns and characteristics present in an individual's fingerprints.

**Why the Correct Answer is Right**
The correct answer is based on the concept of Galton's criteria, which states that a minimum of 12 points of similarity are required to establish a positive identification between two fingerprints. These points of similarity can include features such as ridges, valleys, and other distinctive patterns. The presence of at least 12 points of similarity is considered a reliable indicator that the prints belong to the same individual. The uniqueness of fingerprints is due to the random arrangement of ridges and valleys, making it extremely unlikely for two individuals to have the same fingerprint pattern.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not meet the minimum criteria for a positive identification. 8 points of similarity may be present in two fingerprints, but it is not sufficient to establish a positive match.
**Option B:** This option is also incorrect as it is too low to guarantee a positive identification. 4 points of similarity may be present in two fingerprints, but it is not a reliable indicator that the prints belong to the same individual.
**Option C:** This option is incorrect as it is not a recognized standard for fingerprint identification.

**Clinical Pearl / High-Yield Fact**
It is essential to note that fingerprint identification is a highly reliable method of identification, with a very low error rate. This is due to the uniqueness of fingerprint patterns and the strict criteria used to establish a positive match.

**Correct Answer: C. 8 points of similarity are required for a positive identification but it is less than the required 12 points and is incorrect.