To correctly identify and label various components of a suspension bridge, we need to understand the structure and function of its parts. A typical suspension bridge includes components such as anchorage, pylons (towers), stay cables, stiffening deck, and primary suspended cables.

1. P – Anchorage: This part is where the main cables are attached at each end of the bridge. The anchorage provides the necessary tension to hold the cables.
2. Q – Stay Cable: These cables extend from the pylon to support the bridge deck directly, commonly seen in cable-stayed bridges but sometimes used in suspension bridges for additional support.
3. R – Stiffening Deck: This is the horizontal structure (the actual roadbed) that supports the surface traffic and connects the sections between pylons.
4. S – Pylon: Also known as towers, these vertical structures support the main cables of the bridge.
5. T – Primary Suspended Cable: These are the main cables that hang across the pylons, supporting the bridge deck from above and are the primary means of suspension in a suspension bridge.

Given these components, the correct labeling based on the illustration is:

• P – Anchorage
• Q – Stay Cable
• R – Stiffening Deck
• S – Pylon
• T – Primary Suspended Cable

Therefore, the correct options are:

• P – Anchorage, S – Pylon, T – Primary Suspended Cable
• Q – Stay Cable, R – Stiffening Deck, S – Pylon