Explanation:

Statements:   T = G > L ,     D > G > R  ,    P = Z < T ,     F ≥ V > R
Conclusions:  R < T,    F = G,   P < L
For conclusion I: R < T
From statements I and II, we get:
T = G > R
Here, the common sign between T and R is '>'. Thus T > R or R < T.
Hence conclusion I follows.
For conclusion II: F = G
From statements II and IV, we get:
G > R < V ≤ F
Here, we can see the opposite signs between G and F. Thus no relation can be established between them.
Hence conclusion II does not follow.
For conclusion III: P < L
From statements I, II and III, we get:
Z = P < T = G > L
Here, we can see the opposite signs between P and D. Thus no relation can be established between them.
Hence conclusion III does not follow.
Therefore only conclusion I follows.