Option 2 is the correct answer. Let`s break down the given pairs to understand why.

1. Somatic Cell Reproductive Nuclear Transfer - This is correctly matched with cloning. Somatic cell nuclear transfer involves transferring the nucleus of a somatic cell into an egg cell, creating a cloned embryo. So, this pair is correctly matched.

2. DNA sequencing - This technique is used for determining the exact order of nucleotides in a DNA molecule. It is not specifically used for forensic tests. So, this pair is not correctly matched.

3. Polymerase Chain Reaction (PCR) - This technique is used to amplify a specific segment of DNA. It is widely used in various fields, including the manufacture of biodegradable plastics. This means that this pair is correctly matched.

From our analysis, we can see that only pair 1 (Somatic Cell Reproductive Nuclear Transfer - Cloning) and pair 3 (Polymerase Chain Reaction - Manufacture of Biodegradable Plastics) are correctly matched. Hence, option 2 (1 and 3 only) is the correct answer.

Alert - The correct answer should be option 1 (1 only) since only pair 1 (Somatic Cell Reproductive Nuclear Transfer - Cloning