What is the best mission type to bring a rookie on?

In XCOM: Enemy Unknown, what is the best mission type to use to level up rookies?

I prefer to play where I am constantly leveling up my rookies, but it definitely seems like there are certain mission types that are less volatile towards rookies than others.

Thoughts?

All missions are theoretically ok for Rookies, though there is a higher risk of them dying in:

• Terror Missions
• UFO Missions for bigger UFOs
• Alien Base Mission
• Final Mission

Just equip them properly with laser/plasma rifles and armor and they should be able to survive.

Disclaimer: all this is with Normal difficulty in mind.

Small UFO landings or crashes are always a safe (ish) bet.

Escort/retrieval missions are a good option since they tend to have a fairly small map and controlled alien appearances. Bomb diffusal missions are also good since you get easy aliens and plenty of cover.

I avoid bringing rookies on missions in large ships, story stuff, and terror sites. Abduction missions aren't great, but if they're "easy" or "moderate", that's not so bad.