Connections between the four answers:- l. "I vow to thee my country" (music).. (Holst?) 2. Chocolate bar snack ... (Mars?) 3. Largest Asteroid.... (Ceres?) 4. One of the V- bombers ........? The connection is ......?
Well, Holst wrote the 'Planet Suite'
Mars is a planet.
Ceres is a 'dwarf planet'
Vulcan is a V-bomber and was thought to be a planet that existed between Mercury and the Sun. It certainly does exist in Star Trek as it's where Mr Spock comes from.
So, maybe the connection is PLANETS ???