The correct answer is: B. Electrolytic capacitor
Electrolytic capacitors have a relatively shorter shelf life than other types of capacitors because they are made with a liquid electrolyte that can evaporate over time. This evaporation can cause the capacitor to lose its capacitance and eventually fail.
Mica capacitors are made with a mica dielectric, which is a very stable material that does not evaporate. This makes mica capacitors have a very long shelf life.
Ceramic capacitors are made with a ceramic dielectric, which is also a very stable material. However, ceramic capacitors can be damaged by high temperatures, so they may not have as long of a shelf life as mica capacitors if they are not stored properly.
Paper capacitors are made with a paper dielectric, which is a less stable material than mica or ceramic. This makes paper capacitors have a shorter shelf life than other types of capacitors.
In conclusion, electrolytic capacitors have a relatively shorter shelf life than other types of capacitors because they are made with a liquid electrolyte that can evaporate over time. This evaporation can cause the capacitor to lose its capacitance and eventually fail.