Answer:
In order to retrain the horse not to buck with fear to a raised hand, the new owner shall counter condition the horse. Every time he has to pat the horse, he shall raise his hand so that the horse realizes the new condition that every time a hand will be raised, it will mean that his owner is patting him. Even when the new owner provides the horse with food, he shall raise his hand first while providing food so that the horse does not back off.
Put the specimen into the jar and seal it. Leave the insect in the jar until its appendages will move freely. Then pin the specimen, spread it in the desired shape, and allow it to dry. ... Small, soft-bodied insects would soon dry out and shrivel or become distorted if not preserved in alcohol.
Actually, I am pretty certain that all of the options are common type of volunteering. I feel that the question is suggesting that the educational activities are not typically done as volunteering in the developed world, but in the developing world, educational volunteering is very common (see for example the organisation "teach for [name of country]- operating both in developed and developing world.
