The percentage of preterm and low-birthweight births are unexplained with regard to cause is 50%.
<h3>What is preterm pregnancy?</h3>
Preterm birth is known to be a term that connote if a baby is born way much too early, that is before 37 weeks of pregnancy have been completed.
Note that in the year 2020, preterm birth is known to be affected by 1 of every 10 infants that was said to have been born in the United States.
Therefore, The percentage of preterm and low-birthweight births are unexplained with regard to cause is 50%.
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What percentage of preterm and low-birthweight births is unexplained with regard to cause?
100%
75%
35%
50%
