Informal letters can be made more conversational by:

using contractions
using formal language
calling the recipient by name
typing the letter in block form
telling the recipient any news of his friends

Answer to this question is formal diction

Which statements describe the relationship of earth and its moon? check all that apply.the moon orbits earth following a nearly circular path.the gravitational pull of earth on the moon is parallel to the velocity of the moon.the moon orbits earth in 1 earth day.the same face of the moon always points toward earth.the moon’s orbit is the result of the interaction between the moon’s inertia and the gravitational force from earth