Answer: d.) The termite has a symbiotic relationship with cellulose-digesting microorganisms in its digestive tract.
Step-by-step explanation:
Termites are the wood eating parasites. They eat wood to meet their nutritional demands. Although there are enzymes present inside the termites which can partially digest the cellulose. But they exhibit a symbiotic relationship with the bacteria present in their gut. The bacteria helps in digestion of rest of the cellulose. In return the bacteria receives shelter and food.