Answer:
restrict - d. to keep within limits or confine
constrictor - c. a snake that kills its prey by coiling tightly around it
restrain - b. to hold back from action
astringent - a. causing a contraction or tightening of the skin
The words 'restrict', 'constrictor', 'restrain', and 'astringent' are all related to the concept of limiting or tightening in some way. 'Restrict' and 'restrain' both involve the idea of holding back or confining something or someone, while 'constrictor' specifically refers to a type of snake that kills its prey by coiling tightly around it. 'Astringent' is a term commonly used in skincare to describe products that cause a tightening or contraction of the skin, which can help to reduce the appearance of pores and fine lines.
Step-by-step explanation: