Correct option:(1)K = N 
Solution:

A population growing in a habitat with limited resources shows logistic growth curve.
For logistic growth
dN K – N
rN dt K
⎛ ⎞  ⎜ ⎟
⎝ ⎠
If K = N then
K –N
K
= 0
 the
dN
dt
= 0,
the population reaches asymptote.