What does invading the host cell enable the virus to do?
A) increase its size
B) synthesize needed oxygen
C) obtain nutrients
D) reproduce

Invading the host cell allow the virus to reproduce and multiply.  

•The tiny infectious agents, which depends on living cells to proliferate are called viruses.  

•Once viruses invade the host cell, they reproduce and multiply by either or both of the processes that is lytic cycle and lysogenic cycle.  

•When the virus invades the host cell, it attaches with it and injects its DNA.  

•The viral DNA injected starts to replicate and produce proteins, giving rise to the formation of new viruses.  

•The fully produced viruses get assemble and lyse or break the cell and disperse to other cells to carry on the cycle.  

Thus, the correct answer is option D, that is, reproduce.

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D) reproduce

Explanation:

When a virus invades a host cell, it simply enables the virus to reproduce by replicating several copies of its genetic materials.

Viruses have no life outside of a host cell, however, they come to life when they enter a living host cell.

In the host cell, they simply utilize the resources of the cell to make several copies of their own.

Viruses are parasites that are very harmful to all living cells.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.