When you push down on a block resting on a table, block atoms and table atoms that are in contact with one another

a. move closer to one another

b. break their bonds with one another

c. move past each other

d. maintain their positions

Option D. maintain their positions.

Pressure does not modify the relative position of the atoms in solid matter. The atoms are kept in position by the atomic and molecular bonds  whose length is a feature of every pair of atoms.

For example, all the bonds of C-C and C-H in the wood will have the same bond length

Where's the pictures ?

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic