Answer: Option A. -> Nonverbal
Nonverbal communication includes tone of voice body language, facial expressions etc. Nonverbal communication is the process of sending and receiving messages without using words, either spoken or written. Also called manual language. Similar to the way that italicizing emphasizes written language, nonverbal behavior may emphasize parts of a verbal message.

Answer: Option B. -> Capital
Proper nouns always begin with Capital letters. The word cat is a noun, which means there is more than one. The word Bob is a proper noun. All proper nouns must begin with capital letters. Countries all begin with a capital letter because they are also proper nouns.

Answer: Option C. -> Abstract
The nouns which cannot be felt, seen or heard are called Abstract Noun. An 'abstract noun' is a type of noun that refers to the quality, action or state. It can't be seen or touched. It can be only felt and realised.

Answer: Option B. -> Decoding

Answer: Option A. -> Channel
Once the message is encoded in a desired format it is transferred through a medium called Channel. A communication channel is a type of media that is used to transfer a message from one person to another. In business specifically, communication channels are the way information flows in the organization within, and with other companies.

Answer: Option A. -> Common
Common nouns require capitalization only if they start the sentence or are part of a title. Common nouns are not normally capitalized (unless they are the first word of a sentence or part of a title). In some cases, capitalization is also required for the first word in a quotation and the first word after a colon.

Answer: Option C. -> Rectification of problem
In the writing of an apology letter, concentrate on rectification of problem. Your apology should be brief and to the point. Your reputation as a trustworthy customer and credit risk may be in question, so your immediate and thorough attention to the matter is important. Focus on your actions to correct the problem and offer assurance it won't happen again.

Answer: Option A. -> Salutation
Salutation is the vital part of the letter which to as good as wishing the person. A salutation is a greeting used in a letter or other written or non-written communication. Salutations can be formal or informal. The most common form of salutation in an English letter is Dear followed by the recipient's given name or title.

Answer: Option A. -> Communication
People cannot interact with each other without Communication. Without being able to express themselves and listen to another, partners cannot achieve intimacy. By developing your communication skills, you and your partner will be able to establish and preserve a loving, respectful relationship between two people who love each other.

Answer: Option D. -> Officer
A circular or notice may be issued by only Officer designated for the purpose. Circulars are announcements that are distributed to small or selective groups of people within the organization, and notices are meant for a larger group of people.