The pairing of in dna is the key feature that allows dna to be copied.

a.) nucleotides
b.) nitrogen bases
c.) chromosomes
d.) codons

C. Chromosomes ive taken a quiz and it had the same question and i got it correct

The correct answer among the choices presented above is option C. The pairing of chromosomes in DNA is the key feature that allows DNA to be copied. Chromosomes are threadlike nucleic acids found in living cells that carries the genetic information of cells in the form of genes.

Original claim is H_o: M = 30

Alternate claim is H_a: M > 30.

Explanation:

Given data:

4 ft tall speaker consume 30 watt power

a group of 40 speaker consume average power of 32 watt

calculation:

A home installed 4 ft tall  speaker that use 30 watt Power

40 speakers used 32 watt Power

Original claim is H_o: M = 30

Alternate claim is H_a: M > 30.