Concept:
Renaissance artists used several painting techniques such as fresco, tempera and oil.
For wall paintings, fresco and tempera-like methods were especially important.
Since fresco is not given in the options, the closest correct technique among the given options is Tempera Technique.
Step 1: Understand Renaissance wall painting.
Renaissance wall paintings were often made on plastered walls.
The artist had to work carefully with durable materials so that the painting could remain on the wall surface.
Step 2: Check the given options.
Oil colour was used mostly for panel and canvas painting.
Pastel and gouache are not the main wall painting techniques of Renaissance murals.
Tempera was widely used in early Renaissance painting and is the correct option here.
Step 3: Final conclusion.
Therefore, the correct answer is:
\[
\boxed{\text{Tempera Technique}}
\]
Hence:
\[
\boxed{\text{(B)}}
\]