Role of Transcription Factors in Gene Expression

During the process of gene expression, which includes the transcription of DNA into RNA, specific mechanisms ensure that only the required genes are expressed at a particular time. One important mechanism is the regulation of transcription factors that bind to enhancer and promoter regions of genes. Understanding these elements is crucial in molecular biology, as they play a significant role in controlling the amount of RNA synthesized.

Considering the different types of transcription factors that facilitate these interactions, which of the following best describes the role of transcription factors that can enhance gene expression?