How many cells have been killed by the virus in this image?
A. 7
B. 13
C. 20
D. 29

The answer is A.7

Explanation:

(Dead cells are in black) (Infected are potato color with green inside them) (Healthy cells are potato color without green)

First, 13 is wrong because there are not yet 13 dead cells

Second, 20 is wrong because there are no 20 dead cells

Third, 29 is wrong because there are no 29 dead cells

So 7 is the only answer and it is correct

Hope this helps

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do