The answer is (D.) Systematic desensitization
Systematic Desensitization is the behavioural technique used by Dr. Shakar which is used to treat anxiety disorders, fear, and phobias like Takeshi who is having a social phobia. The technique is to gradually exposed the person like Takeshi to an anxiety-producing object, event or place like when she is asked to walk on a busy street.
Answer:
question a and b on what ?
Explanation:
I would say that the sectional tensions strengthened during the 1850s mostly because of slavery. As you already know, historically, the North and the South of US were very different. The North went out of its way to abolish slavery, whereas the South was pro-slavery. This is what created many tensions, and later on, even more wars between these two sections.