Which statement about the half-life of a radioactive sample is true?
O It is an exact measure of the decay of an individual atom.
O It measures the tendency of a radioisotope to decay radioactively
O It is affected by the concentration of the radioactive substance that is present
It can be calculated based on neutron number

Explanation:

The half life period of any radio active substance is the time required to decay half of its total quantity . Thus it measures the tendency of a radioactive substance to decay .

It is independent of the original quantity of matter present .

B

Explanation:

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object 2 because all the other ones are wrong

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong