Which of the following statements is true about all cells?
A. They are all part of tissues.
B. They all contain chlorophyll.
C. They all have a cell wall.
D. They all have a cell membrane.

The true statement about all cells is ; ( D ) They all have a cell membrane

Cells are composed of sub particles and this depends on the type of cell ( eukaryotic cell and prokaryotic cell ) but every cell have one sub-particle in common which a plasma cell membrane which regulates the inflow of substances into a cell.  

Some organisms are single celled therefore their cell cannot be said to be part of a tissue, while multi-celled organisms are composed of tissues. only plant cells contain chlorophyll and also possess plant cells.

Hence we can conclude that the true statement about all cells is that they all have a cell membrane.

Learn more :link

D. They all have a cell membrane.

Explanation:

It can't be A because blood cells aren't part of tissues.

It can't be B or C because chlorophyll and cell walls are only in plant cells.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.