Match each capacitor arrangement to the quantity its elements share and the resulting combination.

• Two capacitors in parallel → Share voltage; capacitances add directly
• Two capacitors in series → Share charge; reciprocals add
• Plates moved further apart → Capacitance falls, as one over the gap
• Dielectric inserted between the plates → Capacitance rises by the relative permittivity

Parallel elements share voltage so their charges add, giving a larger capacitance; series elements share charge and split the voltage, giving a smaller one. Geometry and the dielectric change $C$ directly, since $C = \varepsilon_0\varepsilon_r A/d$.