Hurry will mark brainilest

what is the author’s purpose for writing "your dna at work"? to explain why cheetahs run very fast to encourage readers to join a science club to describe how proteins are produced to motivate readers to become genetic scientists

to describe how proteins are produced  

Explanation:

The main function of DNA is to carry information contained in its sequences, called genes. Genes are excerpts from the DNA present in chromosomes that initiate protein manufacturing processes with various functions in the body. For proteins to be formed, DNA has to "work". That is, DNA has to start the replication process in order for RNA transcription to be done, so that protein manufacture can finally be done. For this reason, we can conclude that if an author writes "Your DNA at Work", he probably wants to describe how proteins are produced.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

the answer is a and have a great day