Correct option is C
Given 'GAURD' is written as 'LDYTE'
Logic = +5, +3, +4, +2, +1 in respective letters
G + 5 = L
A + 3 = D
U + 4 = Y
R + 2 = T
D + 1 = E
and 'CLOVE' is written as 'HOSXF'.
C + 5 = H
L + 3 = O
O + 4 = S
V + 2 = X
E + 1 = F
Similarly,
HORSE be written in that language
H + 5 = M
O + 3 = R
R + 4 = V
S + 2 = U
E + 1 = F
Final answer is MRVUF.