Which vector can clone a small fragment of DNA?
A)Bacterial artificial chromosome
B)Yeast artificial chromosome
C)Plasmid
D)Cosmid

Hint: DNA or deoxyribonucleic acid, is genetic material for humans and almost all other species. Almost every cell in the body of an individual has the same DNA. Most DNA is contained in the nucleus of the cell (where it is called nuclear DNA), although a small amount of DNA can also be present in mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures inside cells that transfer energy from food to the form cells can use.

Complete answer:
Cloning, the method of creating a genetically identical version of a cell or organism. Cloning also occurs in nature—for example, when a cell replicates itself asexually with no genetic modification or recombination. Prokaryotic species (organisms without a cell nucleus) such as bacteria develop genetically identical duplicates of themselves using binary fission or budding. In eukaryotic species (cell nucleus organisms) such as humans, all cells undergoing mitosis, such as skin cells and gastrointestinal lining cells, are clones; the only exceptions are gametes (eggs and sperm) undergoing meiosis and genetic recombination.
The primary function of vectors is to replicate the sequence of DNA inserted in them. Normally the following five cloning vectors are used in the field of genetic engineering: Plasmids, Bacteriophages, Viruses, Bacterial artificial chromosome and Yeast artificial chromosome.
Plasmid is being used to clone small DNA fragments. It's because it's tiny in size and double stranded in nature.

Hence, the correct answer is option (C)

Note: In biomedical science, cloning is commonly described as the duplication of any kind of biological material for scientific analysis, such as a piece of DNA or a single cell. For example, DNA segments are exponentially repeated by a process known as polymerase chain reaction or PCR, a technique commonly used in basic biological research.