What are the silent letters in the word comb

In writing, an idea map is a writing plan similar to: a)an outline. b)an illustration. c)a conclusion. d)a graphic.

During an experiment measuring the change in temperature of a chemical reaction your digital thermometer breaks. you have the same model thermometer available to use how do you proceed with the experiment a. continue on with the new thermometer b. begin the experiment again with the new thermometer c. calibrate the new thermometer and make a notation regarding the change in equipment d. calibrate the new thermometer and begin the experiment again

If you guys use the app episode whats some good stories on there? ? just curious