What is the standard default for low angle trajectory?

The standard default for low angle trajectory being "Standard default without request" is correct because low angle fire is generally the default option used by artillery units unless otherwise specified. This type of fire is often utilized because it provides a more precise and effective method for engaging targets, particularly in situations where there is a requirement to minimize collateral damage or avoid obstacles.

In many scenarios, artillery units are trained to use low angle trajectories as a baseline for engagement unless the situation dictates a different approach. This allows for a quicker response time and greater efficiency in supporting ground forces. The application of low angle trajectories is particularly advantageous for their ability to deliver rounds with a more predictable impact point while adhering to safety considerations for friendly forces and civilians in the vicinity of the target.

The other options don't accurately represent how low angle trajectories are typically managed in call for fire operations. For instance, low angle fire isn't something that gets cancelled arbitrarily or applied only to point targets, but rather a tactical choice made based on the specific circumstances of the engagement.