Which combination of knots should be used to hoist a charged hose aloft?

Explanation:

The correct combination of knots to use when hoisting a charged hose aloft is D. Becket bend with a couple of half hitches. To properly secure the hose, a Becket bend (also known as a sheet bend) is used to join two lines of different diameters. Adding a couple of half hitches ensures additional safety and security to prevent the hose from slipping or coming undone during the hoisting process.

Option A would not be appropriate because it specifies a Becket bend on a bight, which is different from a standard Becket bend and may not be suitable for this particular task. Option B, the Figure eight follow through, is a secure knot commonly used in climbing but not specifically designed for hoisting hoses. Option C, the Clove hitch with a half hitch, may not provide sufficient security for a charged hose, especially if the hose is heavy or under pressure.