During a ribosome assembles a polypeptide whose amino acid sequence is specified by the nucleotide sequence in a molecule of mrna.
a. transcription
b. translation
c. replication
d. posttranscriptional modification

B. translation

Explanation:

The translation is the process wherein the nucleotide sequence of mRNA is read as triplet codons to make the proteins. The nucleotide sequence of mRNA specifies the amino acid sequence of the protein. Mature mRNA joins the ribosome to start the process of translation. During elongation, ribosome moves along the mRNA and tRNA carry the amino acids according to the nucleotide sequence of mRNA. The amino acids are joined together by peptide bonds and the product is called a polypeptide or protein.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms