What are the rules or standards to observe while working with solutions in a laboratory?

-Be alert to unsafe situations and report them immediately.
-Identify the types and locations of all chemicals or hazards.
-Reading and interpreting chemical labels and hazard signs.
-Use personal protective equipment (P.P.E)
-Locating and and using the M.S.D.S. manual containing all the safety data sheets.

They might be white heads, basically pimples but you should ask your parents to check them out before it’s something bad.

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b