Which cell type is essential to the immune response?

White blood cell

Explanation:

White blood cells also known as leucocytes are the cell type that include lymphocytes, neutrophils, basophils, eosinophils and monocytes. All the classes of white blood cells play vital role in immune response.

Thus, White blood cell is the answer

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.