Can somebody help me, please?

modal adverbs are used to modify specific verbs that consist of a linking verb (verb of being) and sometimes another verb. examples of modal verbs include can, could, may, might, must, shall, should, will and would.

modal auxiliary. an auxiliary verb characteristically used with other verbs to express mood, aspect, or tense. in english, the most common modal auxiliaries are can, could, may, might, must, ought, shall, should, will, and would. also called modal .

c. would be the answer : )

explanation:

i cannot see any of the options                                                                        

noo because no animal can leave it's mother land and freedom even we can't leave some days in a single room by leaving home it is wrong but needed to protect them