**Core Concept**
Microarray is a high-throughput technology used to analyze the expression of thousands of genes simultaneously. It involves the hybridization of labeled nucleic acid samples to a matrix of complementary DNA (cDNA) or oligonucleotide probes attached to a solid support.

**Why the Correct Answer is Right**
Microarray technology allows for the quantitative measurement of gene expression levels across multiple genes in a single experiment. This is achieved through the use of fluorescent or radioactive labels that bind to the target DNA sequences, enabling the detection of specific hybridization events. The resulting data can be used to identify differentially expressed genes, understand gene regulation, and investigate the underlying mechanisms of various diseases.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to microarray technology, which focuses on gene expression analysis rather than protein function.
**Option B:** While microarray data can be used to identify potential biomarkers, this option is too narrow and does not capture the full scope of microarray applications.
**Option C:** This option is incorrect because microarray technology is not limited to the analysis of cancer genes; it can be applied to the study of various diseases and conditions.

**Clinical Pearl / High-Yield Fact**
Microarray technology has revolutionized the field of molecular biology, enabling researchers to study the complex interactions between genes and their environment. By analyzing gene expression patterns, scientists can gain insights into the underlying mechanisms of disease and develop new therapeutic strategies.

**Correct Answer: C. Microarray is a high-throughput technology used to analyze the expression of thousands of genes simultaneously.**