Answer: I think it either c or d
Hi , the answer is Robin Hooke, he named the cells , cells in 1665.
A portal of entry<span> is the site through which micro-organisms enter the susceptible host and cause disease/infection. Infectious agents enter the body through various </span>portals<span>, including the mucous membranes, the skin, the respiratory and the gastrointestinal tracts.</span>
Always go with the second greatest. it has more of a consistent vibe so personaly id go with C
