There are usually ethical concerns when the topic of biotechnology is discussed. The use of Henrietta Lacks cancerous cells from her cervix is one of the first cases of what is and what is not ethical when it comes to
using human tissue for research
What was the greatest ethical concern in regards to the researchers obtaining and using Hela cells for
research?

The Testing of family members when researchers found HeLa cells has contaminated other specimen.

Explanation:

the answer is c) an oak tree

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.