When only one pair of shared electrons is involved in a covalent bond, the linkage is called a bond. triple double single resonant?

The answer is Single.  When only one pair of shared electrons is involved in a covalent bond, the linkage is called a single bond. A single bond is usually a σ bond. 

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later

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