All houston methodist buildings system wide have an emergency power generator that turns on to supply emergency power after normal power shuts down within:

a. 5 seconds
b. 30 seconds
c. 60 seconds
d. 10 seconds

D. 10 seconds

Explanation:

The Houston Methodist Hospital has eleven diesen powered generators that turn on at most 10 seconds after the normal power shuts down.

Considering that it is a hospital, this system is really important.

So the correct answer is:

D. 10 seconds

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c) both a and b.

because growing process had stoped after 4-5 year