Now, we can check all the options one by one
(a) F ? K......(false)
(b) H < K .......(true)
(c) F < G ......(false)
(d) K ? H ......(false)
So, it clear that option (b) true ,

Try all option one by one.
From the expression "C "--
A < B = C ? D,
A < D will be definitely true .

We can check all the options one by one.
from option (a),
M = P > Q > R ? M > R
So, expression M > R holds true for option (a).
From option (b),
M > P ? Q = R ? M > R
So, expression M > R holds true for option (b).
From option (c).
R = P < Q < M ? R < M
So, expression M > R holds true for option (c).
From option (d),
R < Q ? P = M ? R < M
So, expression M > R holds true for option (d)
From option (e),
M = P < Q = R ? M < R
So, expression M > R does not hold true for option (e).

Given that,
H ? I = J > K ? L
Here, statements are already combined
H ? I = J > K means H > K
Conclusions
I. K < H     (true)
II. L ? I     (false)
So, it is clear that only Conclusion I follows from the given statements.

Given that
S > C ? O ....(i)
P < C ...............(ii)
On combined the statement (i) and (ii), we get
S > C > P
P < C ? O
Conclusions
I. O < P............... (false)
II. S > P ................ (true)
So, it is clear that only Conclusion II follow from the given statements.

Given that,
A = B ? C ................(i)
A > R .........................(II)
On combining the statements (i) and (ii), we get
R < A = B ? C
Conclusion
I. B > R. .................(true)
II. R < C .................(true)
So, it is clear that both Conclusions I and II follow from the given statements.

Given that,
D > E ? F ..............(i)
J < F .........................(ii)
On combining the statements (i) and (ii), we get
D > E ? F > j
Conclusions
I. D > J       (false)
II. E < J       (false)
So, it is clear that neither Conclusion I nor II is true .

Given that,
P < Q > T ...................(i)
R ? Q ......................(ii)
On combining the statements (i) and (ii), we get
P < Q ? R
R ? Q > T
Conclusions
I. R > P ...... (true)
II. T < R .......(true)

So, it is clear that both Conclusions I and II are true.

Given that,
D > E ? F ............(i)
J < F ......................(ii)
On combining the statements (i) and (ii), we get
D > E ? F > J
Conclusions
I. D > J        (false)
II. E < J         (false)

So, it is clear that neither Conclusion I nor II is true

Statements
P < Q = R ? S ? T
Conclusions
I. T ? Q         (true)
II. R > P       (true)
Hence, both conclusions are definitely true.