Which of the following functions is associated with the blood?
a. delivery of oxygen to tissue cells
b. transport of digestive enzymes to the small intestine
c. maintenance of dna content of egg cells
d. transport of neurotransmitters across synapses
e. electrical stimulation of the heart

A. delivery of oxygen to tissue cells  

Explanation:

Blood is a liquid tissue formed by different types of cells suspended in plasma. It circulates throughout our body, through veins and arteries. Veins carry blood from the organs and tissues to the heart, while arteries carry blood from the heart to the organs and tissues.

One of the basic functions of the blood is the transport of substances, of which the transport of oxygen to the tissues, the transport of oxygen and nutrients to the cells, the removal of tissues from cellular activities (such as carbon dioxide produced in the cell). cellular respiration and the conduction of hormones by the body.