Which of the following is most likely to be observed by a physiologist? bone, called osseous tissue, is the most rigid connective tissue. epithelial tissue is made up of one or more layers of tightly packed cells. the nervous system is composed predominantly of neural tissue. the oily secretions from eye ducts prevent the lids from sticking together.

The correct answer will be option-B.

Explanation:

Physiology is the branch of science which deals with the study of living matter at their physiological level like chemical and physical phenomenon. The physiology involves mainly the study of cells, organs and tissues and how they interact with each other to perform the functions and activities of life.

The physiologist will the Epithelial tissue which is made up of tightly packed cells and form layer as will be interested to study the way the cells work and interact through membrane transport.

Thus, Option-B is the correct answer.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.