Option 1 states that ferns and figs reproduce through seeds. Fern is incorrect because ferns reproduce through spores, not seeds. Fig is correct, as figs are produced from flowers, which contain seeds. Therefore, option 1 is incorrect.

Option 2 states that mosses and pines reproduce through seeds. Moss is incorrect because mosses reproduce through spores, not seeds. Pine is correct, as pine trees produce cones which contain seeds. Therefore, option 2 is incorrect.

Option 3 states that ferns and mosses reproduce through seeds. Fern is incorrect, as mentioned earlier. Moss is correct as mosses reproduce by dispersing spores. Therefore, option 3 is incorrect.

Option 4 states that figs and pines reproduce through seeds. Fig is correct, as mentioned earlier. Pine is also correct as pine trees produce cones which contain seeds. Therefore, option 4 is correct.

In conclusion, the correct answer is option 4, as figs and pines are the only plants listed that reproduce through seeds.