The organism that breeds only once in their life time :

The correct answer is Option (4) → Pacific salmon fish

Option (4) Pacific salmon fish — Correct. Some organisms breed only once in their lifetime and then die. The Pacific salmon fish is the example NCERT gives (bamboo is a plant example).

NCERT Extract:
Life History Variation – “… Populations evolve to maximise their reproductive fitness, also called Darwinian fitness (high r value), in the habitat in which they live. Under a particular set of selection pressures, organisms evolve towards the most efficient reproductive strategy. Some organisms breed only once in their lifetime (Pacific salmon fish, bamboo) while others breed many times during their lifetime (most birds and mammals).”