Jim Murphy borrowed $30,000 on a 120-day 14% note. Jim paid $5,000 toward the note on day 95. On day 105 he paid an additional $6,000. Using the U.S. Rule, Jim's adjusted balance after the first payment is:

The Rough Endoplasmic Reticulum (RER) is involved in some protein production, protein folding, quality control and dispatch. It is called ‘rough’ because it is studded with ribosomes.
So, I guess out of the four options given, the third option given - "The endoplasmic reticulum is like a factory that helps produce, process, and transport bricks", makes the most sense

Hope I helped! xx